This is one of my biggest leaks, Stick. Not necessarily just check-raises, but when people give me action in any shape or form, I assume they're bluffing
for whatever reason.
After playing a lot more recently I've been able to make bigger and bigger folds, but the problem's still there. I've basically told myself not to stack without what is obviously the best hand, if I'm getting really good odds
to call, or if I have a solid read that I'm ahead. Seems to help, but it's basically something you need to try to work on yourself. Try folding everything but the nuts in stacking spots for a week or something similar to that, then adjust based on your experience.