Today I had put my daughter down for a nap and she was crying. I had my head in my hands, not because I was upset, but because I was listening to her cry and trying to figure out if I was going to need to go in there. My son comes up (he is three) puts his arm on my shoulder and says, "Are you ok, Daddy?" I explained I wasn't sad, I was just thinking. He sighed and says to me, "Being a Daddy is hard!" Wow! Moments like that make it all worth it.