Damn you work so hard to get a set when you have a pocket pair and lo and behold there is a flush draw or straight draw on the flop.
My set of A's lost to a straight and my set of 6's lost to flush this weekend. I know I need to let these hands go when the board indicates a potential flush or straight (cost me over $100 so it won't be too hard to learn). I guess it is teaching me the value of raising more pre-flop and betting a lot more on the flop (to give the guys chasing a draw crap odds to call).
This transition from Limit to No Limit is quite an expensive learning experience.