Every journey begins with the first step and you just took it.
what is working for me so far is calorie counting. I am also taking Alli. Alli keeps me in line and afraid to eat anything high fat if you know what I mean! LOL!
The best thing working for me is that I keep a food log. I write down everything (and I mean EVERYTHING) I eat. I make sure what I eat doesn't go over 1800 calories. Sometimes this means I have to plan some of my meals ahead of time.
good luck!