Of course, that depends on what state you reside in. The comparison looked at two US states: New York (a relatively high tax state) and Texas (with no personal state income tax). New York ranks 115.7 on Forbes' misery index; Texas is at 94.6.
As far as the rest of the world, leading the way in low taxes is the United Arab Emirates at 18.0 (not surprising, given their oil). The worst place for taxes? France, at 166.8.