Struggling with Weight Loss, Part 1

Most of my life, I have struggled with my weight. Last year, I had a wake up call when one of my legs went numb, and my weight ballooned to almost 350 pounds. I was easily winded when walking; I couldn't walk more than maybe half-a-mile before I had to stop. Also, my back was always hurting.

Finally, last summer, I said enough was enough. I started walking on a bike trail around a small lake in a local park. At first, I could only walk about a mile, but after my son started joining me, it would increase to two, then four miles. By the time the summer ended, I was able to go around the entire lake, then walk three-quarters around one way, turn around, and walk the other way all the way back. The total distance was almost five miles. By Thanksgiving, I was down to 300 pounds, and by Christmas I was 285.

Unfortunately, recent trends don't bode well. This summer, circumstances have prevented me from being as diligent with my weight loss routine than before, and my weight has crept up again to around 305. Although this doesn't seem like a huge setback in the grand scheme of things, it is one for me. What I need is some motivation to hit it hard again. I'd like to be around 250 by Christmas. Can anyone give me some inspiration?