i think i have like moderate forms of agoraphobia. it isn't as bad as others and their battles with it. and honestly, it gets worse during different stretches of time in life.
the way i've honestly fought the problem is always forcing myself to be around people or in a social environment; and fight the urge to isolate myself and stay in my room. basically forcing myself out of my comfort zone. so through this, i forced myself to work retail downtown where it's always busy, which allowed me to literally ALWAYS be around people, be interactive and talking and meeting new people, and being in a social environment the majority of the time outside of school. and i can definitely say that stretch of time helped so much in battling my agoraphobia and it made me really happy. since then, i've resorted back to my isolation because of stuff, but i'm trying to fight through it again and get to that point in my life again.
everyone's different, so i'm not sure if it'll help you at all. but all of us on here plan to die relatively quicker than others in society. i think of it as, well we obviously don't have much time left and eternity, so what's the harm in trying to better ourselves, do things that were afraid of, one last time?. atleast we tried if it doesn't work out and it won't hurt us in the long run, cause we won't be here to see and feel that. and well, if it doesn't work out, atleast we end our lives they way we'd like, and went down fighting, and we can tell ourselves that we atleast tried and fought till the end? that's pretty much where i'm at right now.
hope things get better for you and hope you find peace. take care.