Mr Stranger I get drawn back to past unhappiness when I am stressed and anxious - off I go into a negative spiral, and I have to try hard to resist and focus on the present.

We all have things in our past we regret and would do differently now, some analysis is helpful because we might learn what to do differently in future but to excess then it becomes like quick sand, it drags us down. We can't change the past it's done, all we can do is take what we can from it and try to learn. That's not easy when in a negative spiral I absolutely understand that.