Hey Katz3,
Sorry to hear you have overweight people around you who don't care--that can make it harder for you. But remember, it's about you, not about them. You need to do whatever it is you decide, regardless of what they choose to do. This is true whether you're surrounded by heavy people, thin people, whatever.
There are lots of different forums to choose from, so browse around a bit. Looks like you want to lose about 40 pounds, and that will take some time. It may be that in the past you were being really restrictive, and finally it just wore you out. Easy to do that. The trick is finding something you can follow long term, not just a few weeks.
Anyway, glad to see you here!
Jay