You're not alone in that motivation. My son is a huge part of my reason for doing this. Kids are so mean in teasing each other, and I've seen my friend's kids get hurt by their mom being called fat. My son is 5, and to him I'm the best mom in the world. I know that it won't always stay that way, and I know I'll make him mad (already do!) and embarrass him in the future. I can't change the fact that I'm an "old" mom compared to most. But, I can do everything in my power to make certain that he still thinks I look like a princess when I'm fixed up! Also, as I've lost weight I have a lot more energy to go do things with him and my husband. They both love it!
Also, as a result of dieting my son has learned a huge amount about healthy eating and has great eating habits for a kindergarten age child. Also, one of my dogs has lost a lot of weight. I put him on a diet too!
That being said, you are who you are - and your kids love you. Use these emotions to drive you - don't hold back because of the risk of embarrassment. I think it's even more embarrassing for a child for their parent not to be there. If there are any situations, just remind yourself that you are doing everything you can to make certain that in the future you won't feel that way!
30 Day Shred - Get back to being able to do it!!
Mini Goal 1 - 189 - No longer "Obese"
Mini Goal 2 - 172 - Start looking OK
Mini Goal 3 - 156 - No longer "Overweight", also low weight in the last 12 years
Mini Goal 4 - 145 - Because I NEEED little goals
Mini Goal 5 - 132 - 1988 Weight
FINAL GOAL - 126