Generic klonopin (clonazepam) and generic vistaril (hydroxyzine) to sleep

I take 2 mg of clonazepam and 50 of hydroxyzine to sleep every nite.  Only get 4 or 5 hours of sleep on a good nite.  Is hydroxyzine HCL or PAM better to sleep.  Have bad insomnia from health issues and personal issues.  Would like to fix the insomnia.  Already been to a sleep therapist.  No help.  Is there any way out of this or something to sleep better.  Already tried ambien and a bunch of others.  Want out of this nitemare.