Weekend ends with some tilt

I was about +4K on the weekend just grinding the cash games, mostly heads up play with some 6 max kicked in, totally rocking them, but moved up to 3/6NL and dropped like 2600.00 in what felt like 10 minutes. I got it in on a A 10 8s 7s board with 87 vs. QJs and he hit a king on the river to stack me. Got the money in good which is all I can ask for and he check raised the flop too!! idiot. I had 10s vs. his Ks all in pre the next hand which totally put me on monkey tilt before I quit the session. So frustrated to put in the hours and hands to be up so much, just to give a lot of it back in like 15 minutes. :o(