What follows is an excerpt from my book Bliss Or Bust: Uplifting Thoughts.
All that happened before is part of the process that brought you to now. And that is all. Just a step along the way. If you notice that you often look back with regret for how you handled a situation or decision, try letting it go. You can be sure you did the best you could with the info you had at the time. You can also try switching your thinking to something more relevant — like how you want to feel now.
The past does not deserve any of your present focus unless you can use past memories to help you feel good now. For example, remembering how you felt during especially joyous experiences in your life, or remembering times you’ve felt certain ways that you want to feel again: like when you’ve felt lucky, adventurous, inspired, sexy, or proud.