Belling the curve

What does it mean if my life tends to either rock or suck, but rarely ends up in the middle? I'm sure it's a perspective thing, but it seems rather counter-intuitive. It's like I live the opposite of the bell curve. Work, love, the movies I watch, the books I read, the food I eat. What's the deal?

By the way, I'm trending toward the top of the curve at the moment...