I'm not necessarily training for a specific run like a 5k or marathon, all I want to do is get myself back into playing condition for rugby. I tore my MCL snowboarding two years ago and have never been able to get back to where I once was...I can still snowboard and do various other athletic activities, but I know I have no where near enough stamina to run, and hit, and get up, and run some more for an entire match. The fact that I'm a big guy (6'3' - 220) combined with my competitive nature doesnt help at all...I need to control my self and start slow, otherwise I beat up my knees and ankles and dont want to run for another week or two. And by then, I've already lost anything that was gained by the first run.
The last couple of years I've felt like this guy, in need of some serious motivation...http://www.youtube.com/user/MrButterBoi#p/a/u/0/u8uJvsoq1gQ...I literally have a pair of running shoes that are two years old, yet many would consider them brand new if you know what I mean.
So I guess my advice to both of us is...don't be afraid/embarrassed to start slow before pushing it. Results aren't going to come over night.