[Discussion] What do you do if you're playing badly?

I've got a deck I know well, I've played probably 40+ matches with it already, and yet today in back-to-back matches I:

• Forgot I can give Psychic Frog flying to fly past ground blockers.
• Decided to play Emperor of Bones post-combat because it's normal to hold up mana for the combat step, therefore missing a crucial exile trigger.
• Miscounted my mana, thinking I might as well play X spell to gain 2 life this turn before combat, conveniently forgetting that Emperor of Bones' activated ability costs mana.
• Forgot I already had a combo piece in play. Most of the time, that combo piece doesn't get cast until I'm comboing, but this time it was part of the "gain 2 life" plan so it was already in play.

I played like an idiot and lost like an idiot. Jesus Christ. Can't even complain about variance.

What do you do when you are playing badly? One common piece of advice when dealing with tilt is to take a break for a while, but I don't know if I'm tilted - players on tilt often start taking very aggressive lines, but I'm not playing aggressively, I'm simply playing badly. Feels like I've been playing badly for a while, too; I can remember similar stupid things I did the last couple of days.