How long am I going to carry on feeling like this?

It just never stops. I just feel so empty, just laying in bed doing nothing. Everytime I try to make myself do something I just feel no pleasure in whatever it is, and give up. What's the point in doing anything if I feel nothing for it. All I have is my family and boyfriend, they keep me going, but I can't rely on them for a life. I'm not living, and I don't know how to. I'm so stuck in a rut and I don't know how to get out. There is no motivation for anything even though this is making me so sad.