What's one hard thing you had to learn that you can teach me easily?

hm.
Dont smoke tobacco. It has a lot of prices it extracts from you, and they all suck

more generally,
the perfect is the enemy of the good: don't spend all your time perfecting things, good enough is almost always good enough.

Don't be a dick and people wont be one back 🤔👍

life is unfair.. deal with it