Admit your deepest regret
Write a short letter to the person you want to apologize to the most. Tell them everything you need to get off your chest. You can be completely anonymous, you don’t have to mention any names. (Don’t worry, I’m not going to tell them…) You know you need to release it, just let it out man. Let it out. Or, of course, if you have no regrets, make something up. ;)