I used to feel like that. You just have to keep reminding yourself that you have to do this, you have to do that. And when you feel like theres nothing to be excited about, go out and do something. Just going to the shops to get food will help take you out of this rut, it clears your mind a little, and changes your routine. You feel lonely? Im in the exact situation right now. Im trying to be a bit more happy and make my self look forward to things more. So what im trying to say is change your routine, do something unexpected and give your self a little reward after doing things like a piece of chocolate

Hope this helped. Feel better