The book is full of small things the average American can do to have less of a negative impact on the planet. It's a bit redundant from chapter to chapter, but I guess that way the reader can pick and choose which topics to read about and apply it elsewhere if they feel so inclined. I especially enjoyed the letters from celebrities at the beginning of each chapter. And while I didn't agree with everything the book suggests (cooking exclusively in your microwave for a year may use less energy than using a conventional oven but it could be detrimental to your health and frequently substituting beef with soy may cut back on the water used to raise cattle but unfermented soy is both extremely estrogenic and most often a dangerous Roundup ready GMO) I still found a lot of ways I can improve at becoming "green".
A few of my efforts now include: trying to use less water by turning off the faucet while I scrub my hands then turning it back on with my wrist to rinse (of course this isn't possible on all faucets), I no longer let my car idol when I pick up Millie from preschool, and I now unplug the surge protectors in the office and theater room every night before going to bed (even if something is turned off it still uses energy if it is plugged in and it all adds up to an enormous amount of wasted resources).
But the biggest thing I took away from this book was a heightened awareness of everything I waste. Paper, plastic, food, water, energy, money . . . waste, waste, waste. We need so little in this life to be happy. And all this STUFF we think "adds" to our life, often times merely makes life more complicated. And while I'm still inherently greedy and selfish, I am trying to be better and that's all I (or any of us) can do.