1) Go on a mission.
No real explanation. Uh... this one has been around for a while. Except this year... will it come true...?!
2) Eat less of the stuff I don't need.
This is a given. I'm not dieting in the strict sense (I detest the idea and I'm quite comfortable with my weight.) But I do tend to over-stock myself when it comes to some things (sweets. Zubs. You know.) I think I'll be a lot healthier (and happier) if I stop doing so.
3) Buy less of the stuff I don't need.
4) Develop a green thumb.