Is thinking about money ruining your happiness?

Time is money, baby! If that statement defines your outlook when you're not at work, you may be less happy, says a new study from the University of Toronto.

Researchers found that how we define our downtime (that is, whether we "pass" the time or "spend" it) contributes to our general well-being. If we're too focused on dollars and cents, we undervalue our leisure time, which undermines our happiness in the long run.

Bottom line: Find the right work-life balance that allows you to enjoy the feel-good benefits of "free" time.