Phil Taylor believes he needs to focus on the right preparation to carry on winning tournaments and continue playing at a high level.
Taylor won the European Championship in Dusseldorf on Sunday, beating 26-year-old Adrian Lewis in the final.
"I realise how old I am and I've got to keep trying harder to keep with these young kids," said the 15-times world champion, who turns 51 in August.
"I need more rest than they do and I need to eat healthier than they do."
Stoke-on-Trent's Taylor claimed the European title for the fourth time, adding to the World Matchplay crown that he won a week earlier in Blackpool.
Current world champion Lewis, meanwhile, had to be content with the runners-up spot in Germany, although he had the added satisfaction of hitting a nine-dart finish in his semi-final victory over Raymond van Barneveld.
Lewis told BBC Radio Stoke: "I'm not one of those players that's going out early doors in tournaments. I've progressed since I've won the world title.
"I don't think I've had a bad year, I've always been there or thereabouts and I just want to put my name on a few more trophies now.
"I've still got to improve my consistency a little bit and if I do that I think I'll win a few more majors."