The problem with New Year's resolutions - and resolutions to 'get in better shape' in general, which are very amorphous - is that people try to adopt too many behavioral changes at once. It doesn't work. I don't care if you're a world-class CEO - you'll quit.
If you don't like what you're doing, you can always pick up your needle and move to another groove.
That's really my goal now. I'm trying to be a positive role model to my kids and to just enjoy this ride, because it's hard. It's hard to enjoy it when you're in it.