Your not alone in feeling alone.
I don't know if that helps..but it is very frustrating..and depressing and people have told me to volunteer as well...and I just am too depressed to do so.

I have an alcohol problem so I went to AA the other day to combat the lonliness..

What type of family system do you have? Can you intergrain yourself back into some family relationships? I am trying that too...I see my sister and my niece more...its work too but I feel better afterwards.