Welcome to the forums Marine!
May many years ago I detoxed off xanax/alcohol....not pretty experience at all but it can be dome successfully.
I use meditation a LOT to calm myself, deal with PTSD and just every day stress.......it's amazing how it can help, but it took me years literally to do it, I was too scared and tensed up tp relax, I was on guard 24/7 and the meditation made me feel very vulnerable.