For those who don't know (probably most of the people reading this, to be fair) I've suffered with agoraphobia for years, along with health anxiety that makes me too scared of heart problems and fainting to attempt much exercise. Well, today I can say that I got through a beginner exercise routine (I pulled a few hip muscles, so hopefully I'll be able to say tomorrow that I remembered to warm up first!) and for the third day in a row, I've walked to the corner shop and back with only minimal panicking!
So small steps, and I still have a huge way to go, but it's a start. Good luck to everyone else going through the same struggles with agoraphobia and/or health anxiety - pace yourself as much as you need to, and you'll get there one bit at a time!