Listener question : what can I do about shame?

Listener question: My question is about shame. Most nights and especially in the morning I wake up recalling situations in which I could’ve done better and about which I feel a lot of shame. Some of these situations go back decades, and some are very recent. Consequently I often do not get the rest I need and my days don’t  always start on a bright and positive note! I would like to be able to see this differently and would love to hear your thoughts. 

Thank you.