I lost 213 pounds in 345 days

Im 18 and from buffalo, I weighted 447 pounds on 11.1.10 and started going to my local planet fitness. All I would do is walk the treadmill on 4.1 speed & 15.0 incline, its tough but if you want to do something then it usually isnt easy, but i would do that for atleast a hour a day 7 days a week, then use the bike for 30 mins or eliptical machine. Then just do a simple arms and chest workout. i ate a 1500 calorie diet. I never ate butter, fast food, pizza or wings, or anything grease. I usually ate chicken breast with a side dish for dinner, Garnola bars and fruit threw out the day and atleast 1.5 gallons of water a day. NEVER drink gatorade, you dont need the calories, powerade zero is the way. I worked 35 hours a week too, so its not like I just had nothing to do, yes I am young but you can lose whatever you want depending on how bad do you really want it.