have you ever met a really happy baby?

There is a baby in my daycare and he's like 4 months old and all you have to do is look at him and smile and he gets soooo happy and startings cracking up and cooing at me. He is the happiest human I've ever met. I wish I could be as happy as him. He likes watching me and smiling at me randomly. I could just be talking to someone and he's smiling at me because he likes when I talk I guess.  When I walk in and he hears my voice he tries to turn his head as far as he can just so he can look at me and smile real big. Makes me sooooo happy lol