There are a lot of open source projects out there, that need someone to do basic work, things like unit tests and documentation.
Pick a few of them and spend an hour a day on each making them better! Whom ever is the most appreciative of your work continues to get your time! It won't put food on your table, but it will get your name out there, and hopefully help you rebuild your confidence in your skills, and maybe even grow them!
I'm not a doctor, but I know that actually getting out of the house on a regular basis is helpful when tackling depression. Any excuse that lets you stay inside all day is likely going to hurt your recovery.
Absolutely find some sort of physical activity and do it every day. Even if it's a run for 30 minutes. Even if it's a walk for 30 minutes. You need to get that blood flowing. As a marathon runner who started running to quit smoking, one of the greatest side effects I've discovered from consistient physical activity (aside from increased female attention, of course!) is the seemingly unwarranted boost of endorphins and happy juice throughout the day. Definitely look into something you can do physically.
Get out of the house. Go work at a cafe. Talk to people. Even if the conversation leads to you talking about some of the problems you feel you're facing. Confronting the rut you're in now with others is an immediately identifiable issue, and we all go through it. Absolutely get the notion that you're the only one with sadness inside out of your head because it's a selfish and incredibly misguided view. We all get there, and most reasonable people are immediately compassionate about it.
Wake up early. Get out of bed by 8 a.m. at the latest, every day. Have a routine before you sit down to work and stick by it. It can be as simple as cooking breakfast for yourself.
Don't forget to breathe. You're learning how to be your own best friend. It's time to learn how to care for yourself and be the best version of yourself, for others (and also for you!).
you're nervous for a reason. not being able to do as much as i used to frustrates the hell out of me
if you'd like to talk to a fellow geek suffering from major depression (F33.2), drop me a line to info [at] wprapido [dot] com
I'm also going to offer a light-hearted suggestion.. Express yourself. Paint, draw, sing, play an instrument, dance, spin, move, write. Keep it private and to yourself if/until you feel like sharing it..