I think you probably mean will power (translation?). I get it, it's the same for my guy. He would like to make better choices, but there's so much to work on, he has to pick a place to start and go from there. This is essentially what he has told me. It's tough, but he's not going to be able to change until he's ready.
Unfortunately, having children doesn't change the fact that the brain wiring and chemistry is having issues processing. It stinks, but it's just true. When my kids were young, I wasn't at the point that I am now. For the most part, I function fairly high but that hasn't always translated into making the best choices for myself or anyone else. In fact, I hadn't been deep into therapy yet, and I was volatile at best. There were a lot of things I would change in a heartbeat if I could go back. But no one could have "made" me do anything at that point. I wanted the best for my kids, but I didn't have the tools available. I simply wasn't capable of making those changes with what I had in my arsenal at the time.
With my guy, I let him make the choices he's going to make, and I just try to help him find the tools. I don't force anything down his throat or make him feel bad for the decisions I think are "less than healthy". It's not my life to control. I've found out that by being respectful to him, not judging him, and leading by example, he's come farther than I could have imagined.
There are a million things I could pick apart, but I don't see any point in that, it just leads to fights and misunderstanding. Even when I had the best intentions and knew what was best for everyone...all I did was push my family away. Now that I lean back and let him ease into it, he's responding.
It's so hard to explain how it feels to be on the other side of this. It's so hard to explain how you hate yourself for doing things you don't want to do, but can't get yourself to stop. Add someone berating you for it, and all it does is make it a billion times worse. For me, being badgered by my friends and family about things I already hated myself for made me suicidal. I felt weak for not being able to control it and that everyone could see it.
Once I realized I could tell them that I'll handle it my way in my time, I did. Once they left me alone and I didn't have to fight on another front, I could fight the front with myself and my bad habits. They meant well, and wanted the best for me, but all it did was make me hate myself more. To this day, if my father starts in on me, until I hold my boundary and tell him to let me make my own choices, I pull into myself and get triggered. It took me a long time and a lot of work to be able to hold that boundary.
Now, just this year I've lost like 80 pounds by changing my eating habits. No one could have ever made me do that until I was ready to. I did it for myself and by myself. I finally felt like I was being left to make my own choices, so I could make better ones. I'm still losing too! I had support, but no one made me feel bad about my choices anymore.