What you learn when you get older is that the world is all bout being. It doesn't matter what specifically you are doing, it only matters that you are. I personally don't regret anything and wouldn't bother to change anything if I could do it over since either way I would still be being which is just perfect.

If you find this to not be true, most likely you are suffering unresolved trauma and thus can't 'be' in the proper fashion. The best solution is to relive your past in your head to identify and work through this trauma. After that, you should be fine with whatever.