Join me in sharing your nightly #GratitudeList on Twitter

To celebrate Earth Week, I'm co-facilitating a series of workshops in NYC as part of No Impact Week (details here and here).

Tonight, I explained that the positive psychologists--the people who study happiness--offer us a lot of tools that can increase our baseline happiness. Getting more stuff, it turns out, isn't one of them.

Every time we buy something new, we get a burst of pleasure, these shrinks say, but before long the burst is over and we return to baseline. Your only choice, if...