Yes you can decide your own treatment. Do not go "cold turkey" off those meds. Plan to slowly cut down the dosage because for example; xanax withdrawl can be deadly if your brain suddenly tries to adjust without it. Zoloft and seraquel are not quite as deadly as xanax when levels drop but a slow lowering of dosage every week is best for quitting. It is acceptable to want a time period of "no drugs" to get a baseline determination for yourself to make further decisions or compare to how you felt "on drugs". It is mature to examine and explore options including less drugs instead of more drugs. I think adding more and more drugs and their various expected side effects is not healthy or helpful, but I was not dehumanized in med school to a corporation flunkie mistrained insurance-coding robot either.

You are the only expert who has any actual knowledge about how YOU are feeling... the advertising industry (look how happy our actor is while selling our product to consumers) and corporate kickback (cruises, holiday trips, superbowl tickets, cars, etc) from pharma companies is organized to increase prescriptions not health. Doctors who over medicate their patients "get more" than those who try to offer patients the least medication possible for the desired outcome... just like any other "profession"... ever hear about a crooked lawyer making deals with the devil instead of seeking justice? So do not accept anyone not listening to your very reasonable and healthy request to help you lower your meds responsibly and safely. You could always ask for the dosage to be adjusted/restarted later if you decide the meds were helpful.