Here's my story... every week at Church everyone compliments Charlie about how happy he is. "Gosh every time I see him he's so happy!"... that's because they see him for an hour a week :). Don't get me wrong, I have really lucked out with Charlie. But as he's growing he's getting a bit more fussy and has a longer list that I go through to make him happy again. Don't ever feel like you aren't a good parent because you're baby isn't happy all the time. Be close to your baby, spend as much time as you can with him and you will learn what makes him happy.
Hehe. He's a sweetie now though!