How do you get away from hands?

Firstly a little history..........

I play $0.10NL, over 15k hands my win rate is 2.1bb/100. I feel I know the basics and am improving but feel I really should have a higher win rate before even thinking about moving up. I play a pretty standard TAGG game at this stage and tend to pick up a bunch of small pots, a few larger pots and almost all my losses come from a small number of big pots.

Sometimes those losses are from getting unlucky. However, after going over HH's and running leak buster I'm left with no doubt that my major leak is getting too attached to hands and going to show down when I really should be folding. My W$SD% is only 47%.

I guess I tend to think people are bluffing too much and when I have a decent hand like 2 pair or trips(and tbh a few too many times with TPTK!!!) I tend to call even when possible straights or flushes are out there and the villain has taken the line that makes it seem obvious he's made it because "folding seems weak".

I have read the thread "put your opponent on a goddamn range" and I'm practicing that!

I'm pretty sure the problem is mental rather than any deficiency in basic poker skill so I'm wondering what sort of things I can do, read or try in order to fix it? How do you all make yourself get away from a hand?