There are times in life when our "insanity" is useful to keep us alive or help us cope with a particularly difficult set of circumstances. We may have begun using our addictive/compulsive behavior as a survival mechanism. Maybe now we're stuck with the "craziness" just because it's familiar, even though its usefulness has long since passed. We may feel more comfortable with chaos than with "sanity" because it's all we've known.
Young David was fleeing from King Saul, who was trying to kill him to prevent him from taking over his throne. "David escaped from Saul and went to King Achish of Gath. But the officers of Achish were unhappy about his being there. 'Isn't this David, the king of the land?' they asked. 'Isn't he the one the people honor with dances, singing, "Saul has killed his thousands, and David his ten thousands"?' David heard these comments and was very afraid of what King Achish of Gath might do to him. So he pretended to be insane, scratching on doors and drooling down his beard. Finally, King Achish said to his men, 'Must you bring me a madman? We already have enough of them around here! Why should I let someone like this be my guest?' So David left Gath and escaped" (1 Samuel 21:10-22:1).
If David had continued to act insane after he was out of danger, he never would have become king or gone on to great victories. We, too, need to let go of the "insanity" that helped us cope in the past, and move on toward our own victories.
Our insanity can end as soon as our recovery begins.