At the first sign of trouble focusing, try taking a short nap or walk. Aversion therapy, snapping a rubber band on your wrist when you notice you're fading, works for some people. Sleeping too much may induce, prolong, or intensify depression. Some psychiatric research indicates that people prone to depression should sleep no more than 7 hours a day. Try setting your alarm for 20 or 30 minutes and taking a nap every time you start fogging over.
Some people find some medications or a sleep clinic are helpful, too, under a doctor's direction.
Many of us who went through high-control situations react with extreme aversion against order, scheduling, working, and so forth. It's quite natural. And know that you may not feel like dancing to anyone else's tune for awhile. Cult veterans appear to be at great risk for depression and other mood disturbances. If you have trouble getting to bed at a fixed time, try setting an alarm clock to wake you at the same time every morning.