I think Raindropvampire gave excellent advice: don't push yourself too hard, try to press on, but don't be ashamed for taking a timeout from it all.

Living without anxiety is very much applying balancing techniques: don't do too much, not too little, don't fear anxiety itself, but don't use too much meds or "loud" distraction to run away from it.

If you can, travel (a long distance) by train, bus or car, looking at the changing view, maybe listen to some soothing (classical) music and/or just wander through crowds and/or nature. Make this part of your routine. Then after a while, while doing this, think about the memories that give you the most anxiety.

This is basically what they now sell as EMDR, but predates it and really works. Definitely nature is our natural, by definition: use it. You might also add EMDR or ERP (no looking for that "loud" distraction, exposing yourself to the cause your anxiety), guided by a therapist.

Try to do your studying and writing at the university campus, where there is a stimulation-wise moderate environment: under-stimulation is certainly an extreme you don't want. If there are other places where you can work, alternate, for additional stimuli moderation. Preferably with some trees and/or rivers or lakes nearby.

Good luck with your decision!