I've been there. The most difficult part is the first month.
I suggest you think about your kids as motivation. Do you want them to be embarrassed to be seen with you in public or proud to be seen with you in public? Do you want to be on 10 different medications daily to control your high BP and diabetes? (Those will happen if you don't take action.) Do you want to die before you're 60?
Since you've been down this road before you probably did it wrong. You probably over did it, tried to do things too fast. You didn't realize that what you really need is an entirely different lifestyle.
I don't know what your current plan is but all you need to do is lift weights 3 x a week and control calories. You can be in and out of the gym in an hour. Eating less won't take any more time.
- You being busy is not an excuse. You can spare 3 hours a week.
Be prepared to do this for the rest of your life. Your health and body are something you only have one lifetime to get right. It should take a year or slightly more to hit your target weight and after that it should be a breeze to maintain it.