I find myself folding on the river because I get scared of large bets. I can play aggressive post flop and if I'm getting called and a scare card comes up on the river (for example third suited card, 4th straight card or a paired board) often the person I'm against comes in with a huge bet, raises or reraises me. And this is before anyone has a chance to read me.

I think I just get scared off of my hands too easy with hands that I'm not 100% sure are the nuts. If I don't have a huge amount of outs or a huge hand then I'm more likely to fold, having invested way too much money along the way. Then the table knows I can get scared off of hands and does it every time.

Any way to fix this? Should I go down a few levels and get used to showing down these hands just to get my confidence up?