Should I end the relationship before it becomes worse?

I've been seeing someone for about a year now and ended up moving into the same town as them. I now have no friends, feel really depressed as can't make any new ones and feel I am becomming a hindrance to him and am no longer my normal self. I am currently sat all alone as I have nothing to do/no one to see, i'm wondering if I should finish it and let him go so I can sort myself out and be more of a better person for someone in the future?