The fact that you've got back on the wagon is a good sign - many people just give up. Use your renewed enthusiasm to develop new eating habits that will stay with you for life - otherwise you will just keep bouncing between weight loss and weight gain and your body will continue to suffer.
Don't forget the Personal Progress and Challenges section. Using these regularly will help you stay focussed and honest with yourself. You can rely on forum members to congratulate you when you succeed and encourage you if you need it.
Remember though, ultimately it's up to you, and only you. You own your body and are in charge of it, totally in control of the food and exercise it is given.