33kg to lose - yikes!

I just found out about this site yesterday and joined up immediately, I have so much weight to lose and I want to do it by the time I'm 40 which is 22mths away! I feel like I've wasted my youth to a certain extent, with my sedentary lifestyle and carrying around all this extra weight for the past 15yrs. I have 2 kids now and I really want to set them a good example and teach them how to eat healthily and live an active and fulfilling life that makes them feel good about themselves, you know? We don't have a huge amount of money to spend on weightloss programs like WW and suchlike, so it's great to find a site like this that is free and helps me to track my progress and promotes a healthy eating plan. Anyway, I'm working hard at it at the moment but I know from past experience that my enthusiasm and willpower will start to wane in a couple of weeks - I'm going to need lots of encouragement and support to keep it going :-)