I don't let myself get tilted anymore. I've come to accept bad beats, suckouts, and coolers as an integral part of the game, and they don't piss me off anymore. Yeah, they suck, but there's not much you can do about them, and the better you are at controlling your emotions, the more likely you are to maintain your composure and continue to make smart, profitable decisions, and overcome those bad situations.
Gettint tilted always made me want to quit and go do something else. Now that I have my emotions in check, my interest stays peaked for longer periods of time, and it usually plays out to my benefit.