Basics: I started a walking / hiking program about 6 weeks ago. Now, I've added running, strength training, yoga, and tennis as well. I've lost 18 lbs so far. :) I started another routine earlier this year that I didn't stick with long enough, but my ex moving out was a huge kick in the butt. I've got a lot of motivating factors to keep me going now, but most importantly, I'm finally doing it for me! :)
Beginning of this year: 315.6 lbs
Official starting weight for this program: 310.8 lbs
Current weight: 292.8 lbs
My Program: I started out giving myself a goal of walking 10 miles in a week. I did that for 2 weeks. Then I upped my goal to 12 miles / week for 2 weeks; then 15 miles. I'm finishing up my second week with the 15 mile goal now. This past week, I've also added a few days of playing tennis for an hour, and I've committed to at least 3 days per week of strength training. I also stretch a LOT before and after every workout (which makes the difference between whether my body can handle it again tomorrow) and do yoga a few times a week, even if it's just a few poses to help me stretch out my back or whatever. The plan next week is to keep the 15 mile goal, but up the intensity more - I decided to start training to run a 5K (I'm giving myself about 12 weeks for that program), so running will be the biggest increase. I'm also keeping my miles the same, because my sister wants to start playing tennis more in the evenings - any day she doesn't have a track meet - so 3-4 days per week.
Nutrition: I haven't focused much at all on my eating. I used to a lot, and it would frustrate me. Then this amazing thing happened. I was working out so often that I didn't have time to nosh. I also had a lot of energy, so I'd sink into more work or hobbies instead of going for a snack. Today, I actually had to force myself to reach 1200 calories, because my body had just naturally adapted to eating less, and I was too preoccupied with other things to think about food. I'm not starving myself in the slightest (averaging around 1300-1800 cals per day most days). I eat whatever I want (and I like LOTS of pizza) ;) but I'm paying more attention to it w/o really trying. For instance, if I want pizza, I'll have it (same with fast food or whatever). But I make myself more aware of what's in it, and I compensate for it by eating less of it or eating healthier the rest of the day, or adding an extra workout to burn off the calories. It's like my body's finally cooperating with my mind, and I don't have to put a whole lot of consious effort into it. I couldn't be happier. :)