Earlier quoted context omitted.
The Internet did this to me for a lot of things -- when I was an island, I used to think I was really good at a lot of things: Table tennis, Tetris, some other video games. And relative to my friends and sometimes even the people a few circles away from them, I was! And then, The Internet. And I discovered that I am absolutely NOT good at table tennis. I am not even CLOSE to good at Tetris. And I am TERRIBLE at every…
Step 1 is to realize you're almost certainly not going to be the best in all of spacetime at a thing. Step 2 is to realize you don't have to be - you can just be the best in a given bubble, centered on the here and now. Step 3 is getting comfortable realizing you get to choose the size of that bubble, any time you want!
Attachment to outcome is very real and hold a lot of people back
For example I started getting really good at chess when I stopped caring how many rating points I lost or won today and completely forgot about ratings altogether