yeah, I'm kinda doing a 'DIY' plan myself, too. Just eating low fat/lite/low-carb everything, eating more veg, fruit, etc. Also - I'm having snacks between meals to keep my metabolism going, and I notice that doing that, I do get hungry more often than I used to, but can be filled up by much smaller portions, which is very good.
My partner and I are also trying to do smaller dinner meals, rather than what we usually end up doing, which is eating less during the day, and eating more at night, for dinner. This is also good because it means I'm getting leftovers to take to work for lunches, and thus, eating more substantial meals in the middle of the day, which helps keep my energy up.
Exercise wise, I'm not doing much yet, as I am just plain BAD at I'm thinking of buying some aerobics/dancing type dvds to do at home of an evening, rather than just crashing out on the couch, or getting off the train a stop early and walking the extra 10-15 mins or so then.
I also find that making a HUGE fruit salad on a sunday night is great, as it's something you can take to work and nibble at that's healthy AND delicious. mmm. I'm eating some now!