... Actually, maybe you can. The December Gallup poll that revealed that most Americans are "very satisfied" with their lives also showed that those with higher household incomes are 20-30% more likely to be 'happy' or 'satisfied' with their lives than those with lower incomes.
Along with the wealthy, Republicans and churchgoers are also statistically happier. I've already seen a few political pundits touting the fact that Republicans are happier, as if registering to vote Republican instantly rockets your happiness into the stratosphere of percentages. But isn't it more likely that political viewpoints are incidental rather than instrumental in a person's happiness? Those who manage to work hard, earn money, and do well for themselves are pretty happy. They also see the value of free enterprise and capitalism and hold primarily Republican viewpoints. In other words, it still comes down to dollars and cents.
On the other hand, FavoriteBoy and I are Republicans who don't make $75,000/year, and we're still pretty happy - so maybe it does come down to your voting preference.
To be on the safe side, don't vote for Hillary.