starting WW again

I am finally going to try to lose this baby weight that I still have on me and then some. A few events happened lately that really been a big wake up call. 1) My sister and her fiancee came to town for her bridal shower and they were big to begin with but they both put on so much more weight, it was shocking. It is really scary and I worry about them. My father, who was not overweight but smoke and drank, died at 40 of a heartattack. And my sister is 40. So this is not a road that I want to follow and I know that if I don't do something soon, it will be. 2) We got a new early intervention physical therapist and she is very overweight. She does a good job with them but another view of how I do not want to be. 3)A guy I know, my age, 36, who was a little chunky but nothing horrible, had a heart attack this summer. It was from stress and eating badly. Thank god he is ok and has no heart damage. All of these reasons are a big wake up call to me. Not only for myself but now I have the little munchkins to think about. I hope that I can be successful at this and maintain it this time.