You fell? What a jerk! Failure! Loser! (Somebody needed to take the other side, I hate it when everybody agrees).
Really, it's great to get on a good clean streak, wheremomentum builds up and you feel like you can be clean forever.
Then out of the blue, Wham! he YH blindsides you with a day that you are suddenly climbing the walls, full of RID (look it up).
And those are the days that you need to apply everything you've been reading / learning, or if all else fails, you need to run for your life.
I'm having one of those days.