My Baby Will Be One Tomorrow

My baby girl is getting ready to turn one.  I'm not ready, I want to push the pause button.  She's not quite walking yet, but trying.  She has a sense of humor and giggles at us.  She is so sweet and sheltered right now.  She's never had anything bad happen to her.  Tomorrow I will make her her little cake, shaped like a princess crown, and smile and sing happy birthday.  My little one is getting big!  She has millions of adventures ahead of her.  Is it possible to be happy and sad at the same time?