I find best thing to do is stop playing and walk away for the day or two
Nice recommendation, but I'm in the middle of a tournament and I can't miss! I'm in a 3 win streak and I am not letting it stop.
But the streak is bad or good, then?
Good. The bad streak is in tactics trainer. My fear is that this eventuates in losing real games.
Then, follow the other guy's advice but only about tactic trainer.