Whether you hurt someone, you chose the wrong person, you trusted someone you shouldn't have, you got hurt, you left something behind, you said the wrong words, you thought wrong... let it teach you.
Make big mistakes & correct them.
Don't try to rationalize it. Recognize it and admit it and learn from it. We never stop learning, none of us.
Mistakes count as much as experiences, as lessons, as anything in life that makes us grow and become a better version of ourselves. Don't judge someone by what someone else told you or by some mistake they made, judge them by how they act after a mistake or how they correct their mistakes, day to day.
If people refuse to look at you in a new light and they can only see you for what you were, only see you for the mistakes you've made, if they don't realize that you are not your mistakes, then they have to go.
I am glad that I paid so little attention to good advice; had I abided by it I might have been saved from some of my most valuable mistakes.
Even Albert Einstein said it, “Anyone who has never made a mistake has never tried anything new.”