I originally posted this in the LO8 forum and got several good answers and was also advised to post here as well.

For the past few days I have been hitting brilliant hands!

Unfortunately, on almost every occasion, I have been outdrawn on the river so it's pretty evident I am on a cooler. Now if someone wants to say this is short term variance I certainly hope they are right (as opposed to long term )

How do you treat a cooler?

Take a break and stop playing for a couple of days?

Just cop your medicine and continue to play hoping you make the right plays and don't tilt?

Or....?

Now for me, it's coming naturally.
I'm just way way above the guy at a tournament then get myself sucked out by a horrible hand.
It's making me angry/numb for some seconds. I will just breathe, hope I get KK to shove while I might look tilted. Then I just say "Well, that's poker, I already accepted these kind of coolers by sitting down here".
Then I just think about how lucky I got already and how it's normal that it happens for the others too.
After doing these three things, my mind is back on a relaxed state, I expressed the unfair feeling, accepted the fact that it's part of the game, then put a conclusion to it by remembering the fact that I won some hands thanks to luck too so I should just be thankful cause after all, it will happen to me again.

Very good answer!

I am reading "The Poker Mindset" at the moment and it says something along those lines except in far greater detail.

IMO you just have to put yourself into a position where short term results don't really matter. Then you can just apply "focus on the process, not the results", "I'm here to make good decisions, not to make money", "it's part of the game, I accepted it when I sat down" and all that jazz.

If for some reason short term results do matter - e.g you're an MTT pro, playing in a final table, and you realize your luck won't converge for these situations over a lifetime - then I have no good advice. I suspect people who thrive in these situations have a different mentality and are significantly less risk averse than the average person.

I think the most important thing to remember when you experience variance of any kind, good or bad, is that X% of the time the outcome that occurred was supposed to.

Therefore, if you were to distribute your win/loss/tie in a % form pie graph you would see how you perform over a long run. If your opponent beats you 8% of the time even after you flop the nuts, well, 8% of the time you are going to lose. Don't be surprised or shocked when you do, accept it for part of the game and continue playing like normal because ..it is. Losing is normal.

The suckouts are just as much apart of the game as the holds.

When you realize this and fully accept it you no longer worry about how to deal with it when it happens. A lot of worries just disappear completely.