If my hands lose for a certain period of time, I start to get nervous and lose control. And that's unacceptable! So I take a sit-out and go out to smoke a cigarette or do some breathing exercises to distract myself and calm down — a few minutes is enough. Then I start analyzing my mistakes and making adjustments to my playing style. If changes don't happen, I simply end the game with the feeling that it's better to stop such a streak than to continue slowly going on tilt. Hitting the walls or the device you're playing on is not an option; it doesn't work! I try to focus on the process, not the outcome.
And also, it's good that I live alone, and in moments when my hands lose for quite a long time - a wonderful and melodic curse (a set of swear words) at the top of my lungs helps, like a meditative practice!