Whenever I lose a winning hand on the river, I try to run as fast as I can to my personal psychiatrist, which is my wife and turn my bad thoughts into romantic gestures (like kissing, hugging, sometimes it turns into a wild session) before I do this:
"take the mouse, smash it into the keyboard until they become one unit. Take that brand new unit and integrate it right into your LCD display. Now take this all in one device you’ve just created and gently but forcefully (only if you forgot to open the fridge door beforehand) aim it at the fridge. If it all worked to plan, now you’ve given it a lesson or a correction and you give it time to cool off its rebel attitude. Make sure you mention to it that if it ever gives up on you on the river again, you might have to repeat the correction. Don’t be materialistic."
And, just like magic, I suddenly forget that anything like that happened and I come back to the tables with a fresh mind and no fcks given about the past.
Hope it helps.