Of course, I don't always manage to get into the zone, and when I'm in their I do still occasionally tilt, or make bad plays, but they tend to be marginally bad plays, or misreads, rather than the unforgiveable flaws such as not raising enough, allowing drawing hands odds, trying to bluff after strength etc. In fact, it's when I start making the latter donk plays that I know I should end my session - quite a useful pointer, though occasionally it takes being stacked to tell me when to quit.