I don’t know if one can ever peak. Wouldn’t that mean you’re the best in the world? There’s always room for improvement, especially since humans aren’t perfect.
Even though I’ve had certain skills for over 30-years, I’ve never felt I peaked at anything. I’m really good at certain things, but there’s always more I can learn. I can always do better.
I think my skateboarding skills peaked when I was 14. :P I hadn’t skated in years, but I went to a skate park about a month ago and was surprised by how much I can still do. I guess I haven’t lost all my previous talents.
But the skill I’m most concerned with, writing, continues to get better; I think I write better now than I ever have before. I don’t know if I have peaked or if a peak is coming, but it’s something I’ll continue to work on.