Depression Support Group
Depression is a real and debilitating condition that is often misunderstood by family and friends. Its meaning can range from a prolonged period of sadness to an actual mental illness with specific symptoms. Find and share experiences with others who are going through the same struggles.
I would join a hobby group, doesn't really matter what. Small bore shooting? rollerblading? Orienteering? harriers? Whatever. Some social club that has an activity you can join in on every month. A very slow start? Yes. And just attend. within 1 or 2 years I bet you will have found at least one friend. I know that's my friendship rate. In the last 3 years I have made 2 friends, one of whom wants me to join her church and will eventually tire of me; the other who is shy and we don't see much of each other.
But that's fine. Give me another 3 years and then I will have 2 real friends, and 2 (or back down to 1) fake friend. That's fine. It's a slow journey.
That or start going out to night clubs and pick up a girlfriend. :p