So you feel bad, because it told you to.
Obviously, this is pretty frustrating. I've never been particularly good at ignoring my feelings and pretending to feel a different way, which makes it hard to say, "Heck no depression, you're stupid. Go away." But I think I'm getting better at it. For me, finding positive ways to distract myself help me remember that I'm not unhappy, even though my body thinks I should be. Going on walks and reading and not eating brownies for breakfast are a good start. And I always cheer up when I watch the misadventures of the Bluth family. Seriously, watching Arrested Development should probably be considered an antidepressant. Although the FDA would have to include a warning on the box that you'll get addicted within five minutes of watching.