It's essential to watch your opponent's style of playing. Always. Even a small inattention can have fatal consequences. This happened to me yesterday. 

I was playing The Big Bang tournament and I think I was playing pretty good. And then it happened. I finished on the 58th position. There were only few players with low stacks and if they finished before me, I would be "In The Money". So I played ultra tight. Then I got a nice hand on a BB(as you will see), so I played it. I should have folded...

I was distracted for few seconds by somenone in the room and then I saw that flop. Looked like: "Hey, nice overpair!" But the villain (little bit agressive player) raised and as I looked on the flop, it seemed to me like he was bluffing. So I called and it was all-in for me. The turn was neutral for both of us. But then came the  river. That famous river which has already destroyed a lot of nice hands. Yesterday it destroyed mine...

I was out "thanks to" a bad beat. The villain had totally trash cards and despite that he managed to win the hand. How would you play this hand on my place? Tell me! And don't forget to watch your opponents carefully. GL at the tables!