Despite all of the stupid sh*t I have done in my life, I've learned not to have regrets.
Everything that I am now is because of every experience that I have gone through.
I have learned from all my mistakes, and I am who I am because everything that I have seen and heard and felt.
I don't think it's worth it to regret the past, we can't change what's happened, and even if we could then we would change who we are. You are who you are for a reason. Don't forget that, accept that, and it will make you stronger.