up and down

You have something else in mind? The best to get away from it is to calculate variations. This makes you more concentrated on the game and forget about any other stuff. But taking a break helps a lot, when you come back you are able to see your own play from an other perspective.

It's hard to get out of a bubble if are just a little bit frustrated after a game, the general rule is to not play immediatly after a loss until you are calmed down and analized your mistakes. This surely takes more time and might be less fun but the things you learn are permanent because you are not under emotions and you improve. And also if you only play to improve you can't loose because you only look at what you have learned after a game and not the result.