Books with a sort of ‘Shonen Anime Protagonist’ arc …

I know that’s a weird way to put it but I’ll try to explain.

I’d like a book about somebody finding their power. I suppose a sort of heroes journey.

Somebody who starts off as fairly powerless, ineffectual and/or stuck in a rut – but progressively finds a way to have an impact, find their path and conquer their demons or those of the world through self improvement and effort.

Hope that makes some kind of sense? Thanks in advance!