It is always so clique to hear people so "no regrets." We are often filled with the regrets of things we see, hear, and do. I have lived my life to the fullest and there are many things I should regret in my life but I don't. I don't think anything should be regretted. Everything is a learning experience.
So you slept with that asshole that cheated on you time and time again? You'll learn that you were just trying to love, and you don't know how to show love.
So you slept with a lot of guys? You were hoping one of them was going to be Mr. Right.. eventually one of them will be.
So you trusted friends, or people you thought were friends with secrets? You'll learn those aren't your real friends.
So you drank a lot and now your head is in the toilet bowl of some gross bar? You'll eventually learn it's not worth it to drink this much..
So you spent 3 years with a guy you thought you were going to marry, but he broke your heart? You'll learn he broke your heart because you were too good for him
So you just spent 5 years doing a job you thought was going to be your career but you now hate it? You'll learn that it helps narrow down to what you really want.
Regrets are lessons. Lessons are made daily to help you learn and live. Embrace them. DO NOT REGRET THEM.