Two thoughts from Eric Berne:
“We are born princes and the civilizing process makes us frogs.”
“A loser doesn’t know what he’ll do if he loses but talks about what he’ll do if he wins and a winner doesn’t talk about what he’ll do if he wins but knows what he’ll do if he loses.”
these are great!
here's one i'm working on, relatedly:
"a frog doesn't know what they'll do if they become royalty, but a royal knows what they'll do if they become a frog. also we're born winners."