Have you tried any other types of medication? Xanax looses its effectiveness as you build up a tolerance, it is not the best medicine to use for control. It is best used to lessen the severity of the symptoms during an attack. It sounds like the seroquel isn't doing the job.
Please ask you doctor to ty something else. There are many meds today that can help and not everyone works for everybody. There is no reason to suffer today or to feel like a zombie.