If closapex is Clonazapam, then that IS your problem. You cannot just stop taking this Cold Turkey, and your doctor probably or at least should know that this drug is highly addictive, and most likely you have hit tolerance and need to up the dose ---which you should not do without your doctors your doctors guidance for tapering.
Please look these two drugs up for more info--this could be your problem
Have you tried Melatonin, it's a natural sleep supplement. And I don't usually promote marijuana, but if you take those two together I bet you could get some rest.
If the problem you describe is different than what you were experiencing before you went on medication, then it's most likely withdrawal symptoms from stopping your meds abruptly. They need to be tapered off of slowly, at a speed that suits you, one drug at a time. Your brain is trying to go back to working naturally again and it might be having a hard time doing that. One of the most common and most persistent problems that can last a long time with withdrawal is problems sleeping. So again, unless this is just you going back to where you were before you went on medication, in which case it's back because you're not taking the medication and haven't solved the problem (the drugs don't cure anything, they just tamp down the symptoms), it's most likely a withdrawal symptom. If this is the only withdrawal symptom you're having you're extremely lucky, but you could still develop more of them. If it is withdrawal, it might go away with time and some techniques such as meditation, a great diet, exercise, and the like, or it might stick around a long time -- people react differently to stopping meds. If it doesn't go away, well, the only way to deal with it is to go back on the medication at the last dose at which you felt fine and taper off slowly as you should have. Seizures are the most dangerous withdrawal symptom, but there are a ton of them and most are way more common than seizures but obviously less life threatening, though having them might make life pretty miserable.
I forgot to mention that I have no side effects at all from any of the drugs only the disturbance of sleep. Some of them were written on them that if you would stop them suddenly you would risk getting seizures but nothing happened thankfully. I am not even depressed or sad I am just irritated and sad about the sleeping problem.