I didn't change the way I thought to get better.
It's just not necessary to do it in any deliberate way.
In fact, all the time I was trying to change my thoughts I stayed screwed up!
I did finally got better through practising some awareness exercises (I've put them elsewhere on the site but don't promise they'll help anyone else) and actually by acknowledging my experiences full on, rather than being petrified of them.
We all have different paths, different destinations, different dreams.