I recently reevaluated what I consider a "beat". Is it really unlucky when AK loses to 87? Or 99 loses to KJ? Or when top pair loses to an open ended straight draw?
Take some time to run these examples in Equilab. You'll find that you lose a lot more often than you think you should. That is you're SUPPOSED to lose. QQ is supposed to lose to AKs 46% of the time. That means you're going to get it in good and lose 46 times out of 100, with those
odds, can you really call it a beat? The answer is no. Fact is you got your chips in good and the cards didn't fall your way. You should be happy with that because 54 time out of 100 you're going to win, which means in the long run, you will win money.
Sometimes the odds will be even more in your favour and you will lose, and sometimes you will be the one that gets it in bad and will win.
The moral of the story is that luck will have a short term impact on individual
hands, but as long as you played the hand correctly and got your chips in good then there should be no need to tilt, unless of course, you flop quad 9's get it all in, your opponent turns over KK and then hits runner runner kings, then you are entitled to throw your mouse at the wall and your computer out the window