I couldnt sleep for ages!!! The only that could get me asleep was copious amounts of pot. Which is illegal and can make your brain permanently enter a psychosis, well i know that now... im on 300mg of seroquel, and 1000mg navalpro. Its helping me to get my s*#t together.
Bare in mind, if you are on it now, it doesn't necessarily mean you will be on that cocktail for the rest of your life.

I know it's flipping cliche and all that, but the advice the clinic's give, been in 3 times, take one day at a time, worry about today, let tomorrow worry about itself...
In a couple of months your doc could lower it, change it, who knows...?
But sleep is vital for us, any sort. Otherwise... Well, I'm sure you know what you end up doing....