I'm thinking of quitting painting with friends because I suck and don't enjoy it anymore
You don't enjoy painting?
Yes, I've lost my self esteem because I was so bad at it.
You can quit if you want. But it's about having fun with your friends, not how good you are.
I want to paint the best and be on top and right now I suck balls.
Don't worry about being the best. Focus on having fun and you will eventually get better at it.