Anyone have suggestions on how to get yourself out of a deep depression?

I did it through aerobic exercise but it was difficult to start with because depression just wants to keep you inside and not moving, so you have to fight it. Start small like walking and build up to something you can deal with like running or swimming etc and you will notice results very quickly. Also try and walk somewhere fun and relaxing like a park. Walking through busy city streets will probably be counter productive. Ultimately you need to deal with what's behind the depression. I haven't so I'm running about 10km a day lol