For me. I'm at 125% all the time, so once things start going bad they usually get worse as I beat myself up over failure. As much as it sucks, pulling back seems be the best fix. For me, right now.
2 weeks ago I ran into over training and/or under-nutrition problems, compounded with crappy sleep. Last week I cut back side work, de-loaded my workouts, and just plain loafed when I was weak. Cut expectations and just got outside more since we had good weather. That allowed me to get excited about this week's work, training, and nutrition, so it compounds positively.
That said, I (and I think most of us) crave consistency, but we just aren't made for it. For me, I think it's just about learning to "cope" so we can stay as consistent for as long, re-framing it: knowing that consistency is the exception, not the rule.