Hyper-unrealistically?
Realised when I had a good thing in ex and dragged myself out of the way I was acting (which is all inextricably tied up with my childhood), which ultimately ended us.
Unrealistically?
Never taken an office job and got a car.
Realistically?
Joined the gym I am at as soon as I knew about it, rather than chickening out of it for so long.
All 3 things part of the same issue with my self-esteem.