Do you have a backyard? Do you have room inside your house? Are there any trails near your house? Any streets that, for the most part, are deserted?
I'm not telling you to go out of your comfort zone... but... just to go.
I started off running in our neighborhood. Please note, this was like... uber rich neighborhood, and everyone else I saw out there were really skinny, obviously the kind of people who eat organic food and have never had more than 10% body fat in their entire life (ok... might be exaggerating a little here, but not by much). Yet... I got out and did it. Despite the fact that I wasn't always the best runner... I still did it... and felt good afterwards.
I now have my grandparents' 40 acres to run on. Most of what I'm doing now is cross-country type running... and I'm LOVING it. Until I'm able to just run for more than 10 minutes without stopping and walking somewhere in between, I'm just mainly going around on a "track" that was mowed out for the 4-wheeler that they own. Then I'll probably end up running around more through wooded areas or going outside of the property. I also run with my dog and my Grandma's dog. My dog has the stamina to run, but she also runs off, my Grandma's dog doesn't run off, but she also doesn't have the stamina. So... I'm working with both of them. It's nice to have others you can work on... takes some of the focus off of me, which helps. If I'm telling my dog to step it up and run faster, I'm not worrying about my own aching joints...
So... I guess what I'm saying is that, even if you have to just run around your house/apartment or backyard... just get out and do it.