Do you think you spend too much time on Facebook? If you answered yes, you’re probably right. The social media giant revealed last year that its 1.8 billion users spend an average 50 minutes on its services (including Instagram). That’s more than one sixteenth of your time awake, or one eighth of your workday. And that number is climbing, up 25 percent from 40 minutes a day just two years ago. If you’d like to reclaim