40 yo mom, 150+ to lose, at rock bottom. HELP.

Hello. I am a 40 y.o. mom of 2 and I have battled my weight since childhood. I have gone up and down countless times, using many different programs, through my youth, my formative years, my failed marriage, and now my childrens youth. My son will be 15 in August and my daughter will be 13 in May. I have robbed them of most of their childhood experiences because of my limitations. I am ready to turn things around for all three of us, because I am at my highest weight ever and feel like I can barely function. My kids also need to lose some excess weight. Please help with insight, inspiration, and friend-adds from people with like-goals. Thank you in advance and I look forward to an interchange of encouragement.