All good things must come to an end?

I guess so, i bouhgt in to a .10/.20 table, up a couple dollars, i am dealt 66 in the big blind, i check to see the flop,

Flop comes

6KK

i check he bets, i go all in, he calls

what does he flip over????

KK? no, K2, so i am like phew

Turn comes J
River comes J

F(*&$@()*&$(*&E)EK!!!!!!!!!!!

i am down to 7 bucks, and i am really pissed anbout this, this was a hand to double me or cripple me, i cant really seem to focus after losign this hand, time to take a day break or something.