You are human, you make mistakes, you say bad things when you’re angry...no one is perfect. The key is to be aware of your mistakes, do what you can to correct them and not repeat them, and move on.
On the flip side, some folks want to hang out in their past life because those were the happiest days of their life. We all have great days in our past. Days that we would love to relive over and over, but the reality is, we can’t. We must use those memories to fuel more great days.
Whether it’s holding on to the good or reprocessing the bad, you should learn from your past but not live there. You have the rest of your life ahead of you and I choose to think the best is yet to come.