I had a hand yesterday where I had AA UTG. I raised to 3.5BB and got a call from SB. The board was Q810 with 2 clubs. He check calls me on the flop. A 10 hits on the turn. He checks, and I checked too (a mistake I think). A third club hits on the river and he leads out with a pot sized bet, which surprised me and after thinking it over, I folded. If I bet the turn and he still led out the river with a big bet, then I can fold. I played that really weakly. Lately, I've lost a lot of hands where I was ahead going in. (There was a hand where I had AA vs. 34os that worked out similar to that one... he made his trip 3s on the turn. I lost my stack) It's made me scared, thinking I am beat whenever I face aggression.