Any suggestions on how to overcome sporadic bouts of crushing loneliness?

It isn’t something that happens all the time. It’s actually sort of always been part of my life. Until recently though I had a girlfriend and a good support system of friends to fall back on. Since then I took a new job and moved away from where my friends are and had to break up with my girlfriend. One of these bouts of loneliness hit me last night and just made me not want to do anything except lay there and stare off into space, moving or doing anything just seemed pointless. Then today it’s persisted except lying around isn’t an option because of work. I’m just going through the day feeling removed from everything….