The most decorated winter Olympian of Great Britain Lizzy Yarnold is "ready for a new chapter" after announcing her retirement from the skeleton.
The first Briton to hold a Winter Games title when he won gold at Pyeongchang in 2018, the 29-year-old plans to help young athletes in the country as they prepare for the upcoming Olympics.
But the two-time Olympic champion will remain blunt on anti-doping.
Yarnold has returned to his old school in Maidstone, Kent, to announce that he has quit.
His first Olympic success came in the 2014 Sochi Games, which were overshadowed by state-sponsored Russian doping.
Russian athletes who met specific criteria were allowed to compete in Pyeongchang, but not under the Russian flag.
Last month, the World Anti-Doping Agency revoked the suspension to RUSADA, the Russian anti-doping agency, in a decision that sparked criticism from the athletes.
Yarnold said: "At the moment I feel like I'm not being heard.
"I think it is clear that the point of view of many athletes was not to allow RUSADA to go back until they had completed all their requirements set a few years ago.
"Doping problems, unfortunately, have been a part of my career for many years, so I really agree with other athletes hoping to continue fighting doping and protecting clean sport and fair competition."
In 10 years of career, Yarnold won all the most important trophies of the sport, including world, world and European titles, before winning his second Olympic gold medal in South Korea eight months ago.
"It has been 10 fantastic years of my life, and I was lucky enough to learn from fantastic coaches and be part of this team," Yarnold told BBC yesterday.
"I was never alone alone, so I can take this opportunity to thank everyone for helping me to realize my dreams.
"When I entered the sport, I wanted to go to the Olympics and now I did everything I could dream of and more."
Yarnold won his first Winter Games title in Sochi in 2014 and successfully defending his Olympic crown at Pyeongchang, he preceded Jayne Torvill and Christopher Dean and Jeanette Altwegg, who both won gold and bronze in figure skating, as the 39; Olympic Olympian most decorated in England.
"Lizzy has given everything to our sport and she undoubtedly deserves her status as a real great," said British Skeleton entertainment chief Danny Holdcroft in a statement.
"His drive and desire to defend his Olympic title was a shining example of digging deep into both physical and mental trenches to make a dream come true."