Not every failure is a learning experience.
But some definitely are. Ever come back to your senses only to realize that you are half a quart of ice cream into an emotional eating binge -- and it's 3 am?
That is a learning experience.
If it's the 8th night in a row that you've had this realization, maybe this isn't really a learning experience. You've learned what you need to know -- now you need to put your knowledge into action.
I'm all for learning and continual refinement, but there comes a time when action is really what counts.