I jump into a mirror and emerge fresh, in a parallel reality surrounding, where my rating is still suiting my own, subjective assessment of my level of ability. Everythings good.
Usually, I can find portals. People in most parallel realities are accustomed to affirmation practices using those devices (mirrors)
Or sometimes you can face the monster of your missed most basic tactics, and cuddle it. He is a part of you.. The more real one.
Good luck.
I watch the x files to reinforce the belief that a far reaching conspiracy is the reason for my losses
Does anyone know if true? Genuinely curious haha
Time off from games usually works. You can study lessons and puzzles instead, and comment on the forums as a break.
Just joking around dude
I have had these days a lot too; bonus points if internet connection was contributing to the losses. However, sometimes you just simply lose (as the original poster mentions). It is somewhat frustrating/disheartening to be on a roll until plummeting 100 or more points later that week (quitting after 2 or 3 in a row losses only does so much - as you simply continue the losses next time you log in).
The biggest help I can advise (difficult to follow sometimes though) is to simply not quit chess/continue to keep a love for the game (hard in a bad losing streak). However, this is the key to improvement long-term. Many people often quit just short of turning it around (not only for chess). I usually notice huge surges up in rating following huge droughts.
After my bad days, I try and remind myself that I am not becoming a worse chess player due to one bad day; I have not forgotten what I have learned - they are simply a few losses in a lifetime. No one will remember your exact losing streak years from now, but they will remember how much you improved.
After playing poorly (online or not), I try to remember that when I play an important game (usually OTB) - ratings mean nothing. I mean that a GM or me have the same chance at winning a chess game 
at the start of the game; it is only into the game (after blunders or inaccuracies) that a GM excels and I do not. In other words, rating goes out the window in a chess game. Rating is an estimate of who will win in advance - but in a game anything could POTENTIALLY happen (it is just that GMs will find it more likely).
I have had these days a lot too; bonus points if internet connection was contributing to the losses. However, sometimes you just simply lose (as the original poster mentions). It is somewhat frustrating/disheartening to be on a roll until plummeting 100 or more points later that week (quitting after 2 or 3 in a row losses only does so much - as you simply continue the losses next time you log in).
The biggest help I can advise (difficult to follow sometimes though) is to simply not quit chess/continue to keep a love for the game (hard in a bad losing streak). However, this is the key to improvement long-term. Many people often quit just short of turning it around (not only for chess). I usually notice huge surges up in rating following huge droughts.
After my bad days, I try and remind myself that I am not becoming a worse chess player due to one bad day; I have not forgotten what I have learned - they are simply a few losses in a lifetime. No one will remember your exact losing streak years from now, but they will remember how much you improved.
After playing poorly (online or not), I try to remember that when I play an important game (usually OTB) - ratings mean nothing. I mean that a GM or me have the same chance at winning a chess game at the start of the game; it is only into the game (after blunders or inaccuracies) that a GM excels and I do not. In other words, rating goes out the window in a chess game. Rating is an estimate of who will win in advance - but in a game anything could POTENTIALLY happen (it is just that GMs will find it more likely).
Would you guys consider - next to puzzles and lessons - any fun-chess-modes to play?
Like knowing you wont hit your high bar today and just want to "push some pawns over the board", without loosing points or getting wrecked totally?
I find when I'm having really bad days it's often due to too much playing. It sounds counter-intuitive but I think of it as chess burnout. I start moving too automatically and start to neglect to actually study the position. If I force myself to take a break for a little bit it really helps. Another thing is when on a losing streak my mindset changes from "make good moves" to "gotta win the game" and that is a recipe for disaster.
Same, my solution is to lose every game (and try not to be banned for sandbagging) and then crush some noobs and you will feel great - that mindset shall separate you from the casual 1600 rated players because you have adapted a killer mindset - beat these scrubs. If you attempted the above and it didn’t work. YOU NEED TO TAKE A BREAK! Don’t look or interact with a chessboard or play a game for at least 2 days and you will come back feeling refreshed and ready to improve.
What do you guys do when you have a crap day?