How do you get through holidays when you're a single mom without any close family or friends?

I'm feeling super lonely and unmotivated. I drew the short stick in the family department and consequently never felt real confident about developing friendships. I have had a few friends over the years, but have also moved a lot and don't have any close friends nearby. I feel fortunate in many ways, but also feel very disconnected. It seems difficult to figure out how to go from here to something more connected; sometimes I wonder if the years of isolation have made it so I just don't possess the knack, and never will. It is incredibly painful to live this way. When I look around me or see people on Facebook it seems like everyone else in the world is connected and surrounded by friends. I try to be a good and caring person, I just have residual fears of abandonment and rejection from growing up with my family. Is this pretty much going to be the rest of my life, or is there a way out?