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(CNN) At the Rio Olympics, athletes are now gearing up to give the Games everything they've got.
The outcome of years of training will come down to just a few days, or even moments, in these next few weeks -- all of it watched closely by billions of people worldwide.
As well as being in absolute peak physical condition, every athlete will need to be in just as good condition mentally -- or psychologically -- in order to handle the multitude of pressures awaiting them. CNN asked top sports psychology experts to reveal just what it takes to perform well under pressure -- and, more important, win.
Ignore the competition
"Focus very much on yourself and your own abilities rather than people too much," said David Fletcher, senior lecturer in sport and performance psychology at Loughborough University. "You have to be very preoccupied with your own performance, almost bordering on obsessional."
This may sound strange because sport is all about beating the competition, but Fletcher insists that it's better for athletes to focus on themselves rather than compare their efforts to others: "Michael Phelps, the most successful Olympian in history, has been beaten. If he put too much emphasis on coming first all of the time, then that would crush him."
Play: The Great CNN Olympics Quiz
Set achievable goals
Motivation is a key psychological factor: "If people feel like they're good at something, then they're going to do it more," Fletcher said. The implication for athletes and coaches is to set lots of different achievable goals, he says. If all goes to plan, the athletes soon feel like they're improving.
Embrace the butterflies
Rio 2016: Top athletes to watch
He's the face of the Games and already has six gold medals -- so could Usain Bolt do the "Triple-Triple" in Rio? Few would bet against the most successful sprint star in Olympic history as he goes in the 100 meters, 200m, and 4x100m relay. He is also aiming to become the first man to win three successive 100m Olympic titles.
He's the reigning Olympic champion who simply does not know how to lose -- and Ashton Eaton is looking good for a repeat of his London heroics of four years ago. The world's leader in decathlon, who holds the world record, will be one of the leading medal hopes for the U.S. in Brazil.
Genzebe Dibaba was named as the Laureus female athlete of the year in 2015 after breaking three world records in two weeks, setting new marks in the 1,500m indoor, 3,000m and two mile indoor events. The Ethiopian, 25, will be going for gold in the 1,500m.
Dutch sprinter Dafne Schippers will be aiming for double gold in Rio with the 100m and 200m on her radar. Schippers, who clocked a world record time to win the 200m at the 2015 world championships, won silver in the shorter distance.
Shelly-Ann Fraser-Pryce is aiming to become the first athlete to win three straight 100m golds at the Olympics -- and she could do it before Usain Bolt. This time around she's dropped the 200m and will be putting all her focus and energy into the 100m. Her opponents have been warned.
She was the face of the London 2012 Games and one of the big winners on a historic "Super Saturday" -- but there could be even more success to come for Jessica Ennis-Hill. The Olympic and world heptathlon champion, is in great shape going into Rio and is one of the favorites for gold.
South Africa's Caster Semanya is one of the big names chasing success in the 800m in Rio. Semenya has been in fine form this year and could even double up in the 400m. She was forced to undergo gender testing after becoming the world 800m champion in 2009 before going on to win silver in t
he event at the London 2012 Olympics.
Katie Ledecky stunned the world at London 2012 by clocking the second fastest 800m time in history and winning the gold at the age of just 15. Since then, the U.S. star has set 11 world records and won every major international race she has competed in.
Having won four gold medals and a bronze in London, Missy Franklin will be leading the charge for Team USA in the pool once again. Now 21, and the holder of six world championship gold medals, she'll be the one to beat rather than the surprise package as she was four years ago.
Michael Phelps will compete at a fifth Olympic Games with an eye on adding to his haul off 22 medals -- 18 of which are gold. The 31-year-old retired from the pool after the 2012 Games but made his comeback two years later.
Golf makes its return to the Games after a 112-year absence and Lydia Ko is hoping to play a starring role. At 19, the Korean-born New Zealander is already the world No.1 and is hoping to add a gold medal to her already extensive trophy haul.
Two years ago the tears flowed as Brazil's World Cup adventure came to a shuddering halt. Now Neymar is hoping to bring a smile back to his homeland with success in the football tournament. He skipped the Copa America to play at his home Games and the Barcelona star will be the main man in Rio.
Uzbekistan's Oksana Chusovitina will be competing at her seventh Olympics -- a record which no other gymnast can match. Her first Games was back in 1992 where she won a gold medal there as a member of the Unified Team (made up of athletes from former Soviet countries). She won bronze for Uzbekistan on the vault at Beijing in 2008 and will be hoping for more success this time around at the age of 40.
She's only 19 but Simone Biles is already the most decorated American female gymnast in World Championships history with a total of 14 medals -- including a record 10 golds. She's the first woman in 42 years to win four straight national title and the first African-American to be world all-around champion and first woman to win three consecutive world all-around titles.
New Zealand's Lisa Carrington has ruled the waves in the canoe world since winning gold in the K-1 200m at the 2012 Games -- just a year after she had become world champion. The 27-year-old is going for gold in both the K1 200m and K1 500m and is unbeaten in the shorter distance over the past five years. She won her fourth consecutive world title over the K1 200m distance last year, after securing the K1 500m world championship crown for the first time.
Kim Woojin of South Korea has already won two world championship titles but this will be the archer's first Olympics. The 24-year-old missed the cut in 2012 but will be one of the favorites this time around.
Italy's Rossella Fiamingo will be looking to add the Olympic épée title to her two world championship crowns. The 25-year-old, who hails from Catania, is her country's big hope for gold in Rio.
Brazil's beach volleyball duo Talita Antunes and Larissa Franca are big favorites to win gold in their home Games. The pair are seeded No.1 in the draw and were winners the 2015 FIVB Beach Volleyball World Tour.
Britain's Nicola Adams will arrive in Rio as the reigning Olympic, world, Commonwealth and European Games champion. The 33-year-old flyweight is aiming to become first British boxer since Harry Mallin in 1924 to successfully defend an Olympic gold medal.
Most people find butterflies in their stomach unnerving before important events, but they're actually a good thing. "These nerves that you're feeling are a sign that you care about this and you're ready to perform. You're psyched up, ready to go," Fletcher said, adding that it's about "interpreting those nerves in a positive direction."
Connect your brain with success
According to Fletcher, some athletes can learn to trigger a feeling of success through smell and sound alone -- outside of competitions. For example, when some athletes are feeling in a really strong, powerful state during training, they smell lavender oil and listen to a certain song. They then repeat these steps before competitions to bring back those powerful feelings.
"It can actually elicit quite strong emotions," said Fletcher, explaining how connecting to these neural pathways can help trigger the unconscious brain, pushing the athlete into a really positive state of mind.
Know yourself
"My main advice would be for the athlete to understand themselves better," said Andrea Faull, a sports psychologist at the University of Worcester. "Understand what they need to do to perform at their optimum level when it really counts, when the spotlight is on them."
For example, when Faull works with athletes such as Great Britain's wheelchair basketball team, she believes it's vital to help them understand what makes them tick and what they need to do to thrive under pressure. By doing this, they will discover their optimum mind set.
Talk to yourself
Rio 2016: The best team you've never heard of play basketball for the U.S.
Team USA center Brittney Griner (far right) will try and lead her team to its sixth consecutive Olympic gold in Rio 2016.
Members of the 2016 USA Basketball Women's National team pose before a pre-Olympic exhibition. The team is riding a 41-game winning streak dating back to 1992, and is 56-1 since the U.S. boycott of the Summer Olympics in 1980.
Point guard Sue Bird is a nine-time WNBA All-Star, three-time Olympic gold medalist and two-time NCAA tournament champion with the University of Connecticut. Kyrie Irving of the Cleveland Cavaliers has called her one of his favorite point guards -- men or women -- of all time.
Diana Taurasi is one of three members of Team USA , along with Sue Bird and Tamika Catchings, gunning for their fourth consecutive Olympic gold.
Geno Auriemma (center), is gunning for his second straight gold as head coach of the USA Basketball women's national team. He is also coming off his 11th NCAA title with the Connecticut Huskies, a record. UConn were 38-0 and notched their fourth college basketball title in a row.
Center Tina Charles takes a shot during the London 2012 Olympic Games women's semifinal game against Australia. The U.S. won 86-73.
Elena Delle Donne of USA Basketball is introduced at an exhibition against the reserve team in preparation for Rio.
Seimone Augustus (#5) and Angel McCoughtry (#8) celebrate with the rest of the U.S. women's basketball team after defeating France 86-50 to win the gold medal at London 2012.
Lisa Leslie (#9) won four Olympic gold medals with the U.S. before retiring from basketball in 2009.
Maya Moore, in white, goes up for a shot against France's Florence Lepron during the gold medal game in London 2012.
Former U.S. basketball Olympian Nancy Lieberman -- a member of the Basketball Hall of Fame, and current assistant with the NBA's Sacramento Kings -- says the Team USA basketball players are the best female athletes in the world.
Griner (L) and Taurasi celebrate after winning the WNBA championship with the Phoenix Mercury in 2014. The pair will also partner in Rio for the U.S. women's national team.
Members of the U.S. women's basketball team celebrate after defeating France in London 2012, to continue a 41-game winning streak stretching back 20 years.
Part of the Team USA's incredible success is its closeness, with a number of players teaming during the six-month WNBA season before playing together in overseas leagues.
Many athletes have rehearsed scripts that they say in their minds to keep focused, Fletcher said. "[They're] convincing themselves and reminding themselves of things they've done successfully in the past. Because often, when the nerves hit, you start doubting yourself."
Recalling great training sessions, race times and hours dedicated to honing certain skills can combat negative thoughts creeping into an athlete's mind when under pressure. For example, top tennis player Andy Murray often leafs through a notebook during his tennis matches to remind him that he's prepared, capable and ready to win.
Learn to communicate
"All too often, conflict and miscommunication can derail things as you're preparing for major competitions," Fletcher said. As a result, many top athletes are very good communicators, so they can get the most out of their training with coaches and teammates.
It's also an element that can be controlled: For example, a short basketball player may not have the height to slam-dunk, but if they're a good communicator, they can bring the best out of the team -- and perhaps get someone else to do the dunk.
Ask 'what if?'
Being truly ready for a big sporting event means never being caught unaware. Just knowing what to do if your shoelaces snap, if your goggles break or if your cap comes off could give athletes the confidence needed to win, Faull said.
16 facts: Rio 2016 Olympic Games
'Get in your bubble'
"I use the analogy of a bubble a lot with my athletes," Faull said. "You want to be inside your own little bubble; you don't want to let anything that might be outside of that bubble penetrate it or burst it."
This means sticking to routines, focusing on what needs to be done to perform and shutting out anything irrelevant to the task at hand.
Visualize the event
Athletes often need to get their mind into a state of readiness in order to calm their nerves and to feel in control of their bodies. "Visualization or imagery techniques is when athletes spend time essentially closing their eyes and picturing the race," Fletcher said.
A key part of competition is the "ready room" before athletes go out and compete. This is when all the finalists are bunched together in one place. They can hear the crowd outside, the loudspeakers, the commentators. The atmosphere can be electric, so it's important for them to be ready and visualize the moment beforehand.
Stick to the plan
"It's about having confidence in the plan," Faull said. "A lot of times, people are thinking in terms of the score or the time, but actually, if you stick to the plan and stick to the process, then the outcome takes care of itself." She believes the key is not to panic if you fall behind in the competition, just focus on yourself and the plan you practiced. It's the best way to perform well.
The team of refugee runners heading to Rio
Pressure is a privilege
Pressure is often interpreted as being a negative thing, but it could actually be the opposite, says Faull. Many people -- whether top athletes or office workers -- really thrive under pressure, needing deadlines to get work done. "It's about teaching athletes to embrace pressure, see pressure as a privilege. ... You can interpret it as being your body's way of saying 'this is important to me. I feel ready.' "
And ... relax
Though embracing the butterflies and pressure can be a good thing, it's also important to not be totally overwhelmed by them. "We use relaxation techniques where people focus on their breathing and just keep a lid on some of those nerves," Fletcher said.
So the key is to be calm, pressured, and nervous all at once -- easy right?