How to deal with the feeling of regret?

when you made a mistake or wronged someone, you mean? In that case you can say to yourself then at that time you did not know any better (excuse yourself) or do admit you were selfish (take responsibility) and then you need to feel that from that mistake on...you grew smarter and into a different person who won't commit the same mistake again. It's kinda a way of learning and becoming a new you...Plus you are so young I am sure you didn't know what your were doing ...

Maybe by thinking about it differently.. Like, you learned something you've had to learn.. Didn't you?

Terger .... its regret spelled backwards ...it's like tiger 🐯

Regret my friend, is an inevitable consequence of life.

Alcohol

learn from it and dont do it again. you screwed up and you can lose a lot when you do.

got to grieve that loss dude