We all have moments or even extended periods of our life we wish we can get back. Now that we are older and wiser, our past choices may seem troublesome and we believe we would now choose differently. The more we dwell on past decisions & non-decisions and the more power we give to them, the more we sleepwalk through life. Our past decisions were based on the knowledge, resources, and experience we had at the time. Give yourself grace and an understanding that you didn't know what you know now and you did your best. Take the lessons, find the compassion for your past self, and start living in the present.
Check in with yourself:
Am I punishing myself for past events, actions, and choices?
What do I need to let go?
What lessons have I learned?