Of course, given how much work Coco has been doing in her own classroom with happiness, I feel it incumbent to add a dimension beyond this quadrant layout. This next chart is based on actual research: a study called "High income improves evaluation of life but not emotional well-being" published in the Proceedings of the National Academy of Sciences of the United States of America.
Which leads us to question the upper right of that quadrant chart. One-percenters may have more money and more stuff, but it is doubtful - according to the data - that they are enjoying themselves all that much more than us plebs. Cold comfort, perhaps.
On the other hand, I imagine few would doubt that a little more do-re-mi would make the lives of those in the lower-left-quadrant a little sunnier.
At least, that's the perspective from the middle.