I agree, it's in our nature to do so. We always wonder if that other choice would have been better. It only makes sense that this happen all the more often at times when we are down; when we are already questioning ourselves anyway. I suppose the opposite is true; consider, the split decisions we make when we are manic, right?

My CBT taught me to make lists (whether literally or mentally) like pros vs cons, advantages vs disadvantages. I suppose with repeated practise it just happens automtically to me now. My point though is that it has been helpful to me.

I wanted to mention though also that I used to have a real problem between making a choice for what I believed was best for me and the choice that others would deem to be correct. My life was a whole lot better once I got out of that trap.