Take it a bit at a time, the best you can. Find something you can change to make yourself feel even a tiny bit better, and change it. The best advice I've ever had about depression and anxiety is that both are products of your mind - and your mind isn't *you*. You can decide what you think if you have the will, and the emotions will (eventually) follow. The best thing (for me ... your mileage may vary) to cut down mental static is to go outside and do things ... even if it's just a short stroll in the park. Mild exercise helps a *lot* (again, for me) with depression and anxiety, even if I don't feel like it to start.

But it does seem to me you need help seeing outside yourself, and it really ought to see a trained professional. If you can't, don't stress over it, but you should make that a goal for when you can.