It's a mindset. Start thinking of everything as "something you can fix". Every time something annoys you or you think of something you wish existed but doesn'

It's a mindset. Start thinking of everything as "something you can fix". Every time something annoys you or you think of something you wish existed but doesn't, or you think of a novel way of doing something, write it down. After a couple weeks you'll realize that you have a lot more ideas than you thought you did, but you were just (falsely) assuming that you couldn't do anything about it.