Just came up with an insight that I think might be rich for you. It's about the distinction between worry and reflection. So many thought leaders counsel us to avoid living in the past. "Live in the now," they advise. "Enjoy the moment." Well, I get what they are saying. But isn't there something good about going back and delighting in the delicious moments of the journey we've arrived from?
Which brings me to worry versus reflection. Whether to revisit the past - in my mind - depends on your intention. If your intention and reason to go back into your past is to dwell on bad things and to worry over things you cannot change and to rehash painful times, then I suggest it's an unhealthy act. But, if your intention - in going back in time - is to reflect on the lessons events have taught you and to grow in wisdom and to savor the precious memories that you were blessed enough to experience well then I think it's good.
I guess what I'm inviting you to consider is that it's a waste of time to fret and regret over things you've done that cannot be changed. But that it's a fantastic use of time to bask in the good times, feel gratitude for them and use your past to serve your future rise.