Ready for a change

My name is Keyshia and I am 32 years old. I have been struggling with my weight my entire adult life. I had my first baby 5 months ago and I weigh more now than I did when I was pregnant (shameful). Yesterday made the 3rd week into my losing weight and getting healthy rountine and I am down 7 pds. Yay me. This is the longest I have ever stuck to something concerning weight loss and it feels good. I know that I am motivated about it now because I am doing it for me and my son. I am finally in tune with my star player and that is me. I started this journey weighing in at 317.8 and now I am 310.2. so thats awesome to me. My goal is to get to 225 because I have never been a skinny girl and I really dont want to get skinny just at a healthy weight for myself. I plan to lose at least 2 pounds a week and reach my goal by 4/26/12 my 33rd bday. Any advise you can give me will be wonderful. I look forward to meeting new people and finding people to go on this ride with me.