Let me give you a quick rundown of me!
During my 20's I got fat and comfortable and, like most people, got desperately addicted to an MMO. I am 5'9" and ballooned up to 360 lbs! I was on 4X shirts and size 50 pants!!!! One day, my wife told me she bought us tickets for my 30th birthday to go to Ireland. This was about 6 months before it happened. I didn't want the humiliation of the Airline person pointing their finger at me and calling me "Fatty McFatterson needs to buy a 2nd seat...everyone look at him, children throw rotten fruit!" etc. etc. So I began running, starting out at about 1 mile 5 days a week.
The first few months weren't so bad (I used to be an avid runner/marathoner in my late teens/early 20's) and once you know how to run, you never forget. You may get slower, but you never forget how to take your mind off the run and go into your zone. I got up to 3 miles in about 3 months. So, there I was at 330 lbs now running 3 miles a day.
I met up with every fat person's worst nightmare while working out...someone that wants to patronize you while you run, thinking they are being nice, but really they make you feel like garbage. This skinny twig of a woman stopped me while running and talked to me like I was 5 years old about the benefits of exercise. Clearly, I'm so fat, that I must not know that exercising is good, and doing nothing all day is bad. I ran into the woman 3 days straight, each day, the same patronizing tone...By day 4 when I saw her, I just turned around and made a new root.
Anyway, by the time we went to Ireland (6 months later), I was up to 4 miles a day, 5 days a week and down to a "trim" 300 lbs! At this point, it became not just about not having to pay for a 2nd seat because of my pornographically large butt, but to get healthy. Over the next year I got down to 200 lbs, where I have stayed for the past 9 months as I run 7 miles a day.