Sad about everything I’ve lost to this

My anxiety has been getting worse over the years, which I’ve mostly just been ignoring I guess, but after a really bad Zoloft withdrawal experience this summer, I’m really struggling with panic attacks and agoraphobia. I’m a 22 year old college student, and I had to take a medical leave for this semester because I can’t go to class without freaking out. I’m terminating my lease for the year for my on-campus apartment that I have with a friend today, and I’m just really sad. My goal is to return to school next semester, but I can’t afford to pay rent on an apartment I’m not using until then, so the apartment complex told me I can just sign a lease for the remainder of the year if I return in the spring. This is my second medical leave I’ve had to take from school (the first one was related to a Wellbutrin issue actually, lol), and I just feel so disappointed in myself and so upset that this is how it is.