GM Viswanathan Anand is a five-time world chess champion, and holds the eighth highest peak FIDE rating in history (2817).
His lifetime winning percentage is 60% (35% wins, 50% draws, 15% losses).
One of the greatest players in history, and he's only 10 points higher than your 50%.
Relax.
It can't be helped. You will just get higher and higher competition until you start losing. The only way for it to not happen would be to be world #1. I think the very worst thing would be to be something like #3 in the world. Then, you would spend your whole life winning, and beat almost everyone, but these last two guys you couldn't beat. You would never be champion, and maybe never even play for it. You would just watch Kasparov and Karpov (for example) play five matches in a row over the course of more than ten years and you never be in that match. It would be soooo annoying.