I see a lot of threads about people being too thin but not much on the other end of the spectrum. I've always been overweight, but I had lost a bit of weight and was down to 247 pounds. That's still overweight, but at 6 foot 2 my weight was manageable. That was my weight in January of 2009. Now I'm up to 374. I've gained about 125 pounds in 18 months. I don't eat a lot of food in terms of volume. I don't eat sweats like candy, cake or ice cream. I drink diet pop and don't eat fast food. I do tend to eat a lot of chips. I just don't see my food intake to be that of someone pushing 400 pounds. The problem is, I just can't seem to get motivated to lose. I guess I look at the daunting task of losing 125 pounds and undoing what I've done the past 18 months and just give up. I don't visit people who've seen me when I was thinner. Everyone said how good I looked when I was thinner. Now that I'm big I take it I don't look good anymore? I have a pretty lazy lifestyle, but I just don't know how I keep getting bigger. I don't binge eat. I don't know what I can do to become more motivated to change. The weight is robbing me of things I've always wanted to do. I've developed knee problems and will need a knee replacement soon and I'm only 26. I can't play any sports, run or do anything physical because my knee will give out. I think my issues are mental and not physical.