I'd never equated being overweight as behaving irresponsibly. If everyone thought this way, would we all be thinner? If my spouse can't nag me to lose weight (see #1), is there anything she could do to encourage it, or is it all on me?
One thing that can be very helpful is to schedule exercise with other people (e.g. spouse). It's easier to get going with a group, it's more fun, and there is a social cost to canceling. You don't even have to do the same exercises -- just go to the gym or pool or park or whatever and do your thing.
i.e. don't nag against bad activities, but support and encourage wholesome ones in their place.
What this implies is that overeating/under-exercising should be taboo just like smoking cigarettes. These things aren't considered taboo by some people, but maybe that's the reason people aren't healthier.
* adblock - no stupid commercials for fastfood places, etc * Downloaded tv (whether brought from iTunes or downloaded from thepiratebay.org) doesn't contain commercials.
Add that a personal mp3 player means you are less likely to hear radio and it becomes that much more difficult to sell you stuff.
But sure I spend more on electronics than I used to.
I would suggest that you and your wife do some research into obesity/nutrition and form a meal plan together. It is much easier to eat the right foods when you're doing it together. It's also fun to cook together. At least, that's working for me and my partner.
I suggest Gary Taube's or Mark Sisson's books for research.
A blog post I wrote illustrating one of his deceptions: http://crazybear.posterous.com/how-1-graph-reveals-what-3000...