Day 102-2012. Too chipper?

Is there such a thing as too chipper or too positive of an outlook? Can someone really always smile and never cry? Always have a sunny disposition even if they learn of tragic news? Or am I just jealous that I cannot keep my disposition sunny? I try to at least fake a smile but even that is sometimes way too hard.  But I seriously doubt people, when I see them always so chipper and smiley.  I think, they must be beating their spouses.  Maybe I am just jealous.  I am jealous that I cannot control myself that much. That I react immediately.  I wish i did not.  I am getting better, but some days, I fail miserably.  Yesterday was one of those days.  I could not get my head above water.  Waves kept knocking me back, it was hard to breathe, I kept trying to keep a smile, but it just kept fading.  The smile became more work than I was willing to give.  I know silly  but sometimes the thought of smiling just is not appealing.  And really I do not need people thinking I am smiling because I am gassy!