I am driven by the fact that I am ugly. In 2006 I weighed 400 pounds and was coming off of a relationship with a girl who basically told me I was too ugly for her. And I have been fat my whole life. So I started the Body For Life program and by 2008 I was 175 pounds. The only problem with that was that my muscles weren't that big. I want to get huge, too.
My mother died in October of 2008, and while I continued to work out, I didn't care about my diet. By 2009 I was 230, by 2010 I was 250-260. I've also had lifelong problems with my thyroid and, coupled with a heavy-lifting manual labor job at night, I was over-trained and under-metabolized.
I've learned a lot over the past 6 years. For bulking and cutting now I follow the Mifflin equation, and the results are OK. Currently I'm trying to lose weight and then from Thanksgiving thru February bulk up (but not pig out..). I stay away from all grains and my source of carbs are beans, sweet potatoes, new potatoes, and other vegetables. I eat no more than 100g of carbs a day, and take in about 400 grams of protein. I have recently tried to give up diet soda as well.
My goal is to look good physically. I don't know if that will ever happen. But it is my goal.