Welcome to human nature. I think most of us are inclined to want what we don't have and worry that what we choose is the wrong or bad choice. I don't have an easy answer. When I have made a choice I try really hard to forget the other options and if I have bought something I try to make sure I don't see a price for the same thing anywhere else.

Sorry you struggle so much this way. Wishing you well and caring thoughts.

(Now I'm worried what I said might upset someone, but I hope they will understand these are thoughts from my heart, not instructions on how to live.