Need help getting motivation

As the title says I'm having trouble with keeping my motivation goinng, for instance I'll go running one day and the next I'm too sore, then the next I'm not in the mood, etc. etc. I went from 364.6 pounds (That was on my 18th birthday) to 324.8 pounds (still 18) but then I lost my job and now I'm just sitting around re-gaining my lost weight, and it really sucks because I want to hit my goal weight of 275 (I'm not gonna stop there but I figured that was a good goal). I'll try to pick my workouts back up or try to go on a diet but I'm by myself and only doing this for myself, I have no real reason. Just need someone to give me a reason to keep trying, my workout partner has pretty much left me on my own so I'm kinda stuck. Also too poor to go to a gym or drive somewhere to run everyday Also I figure it's important for you all to know I am 6'5"

TL;DR Was working toward my goal, but got fired, then lost my workout buddy. Looking for new motivation