You have goals, and I think that's really an important thing, knowing what you are working towards! I have two sons, 9 & 11, and it sucks that I cant run with them because all the weight in my stomach bears down so heavily on my knees. I cant really ride a bike comfortably either, and i desperately want to start biking, as well as kayaking (much moreso than I want to run).
I'll tell you what,trying to put an end to habit/comfort eating is just as hard as quitting smoking!