Wow, how exciting and emotional! The first day of preschool is a big milestone, not just for your child but for you too. I'm sure your little one will love it, and he'll make lots of new friends in no time. As for missing you too much... well, just remind him that you'll still be there waiting to give him all the hugs and kisses he wants when school's over. In fact, why don't you tell him a fun joke or two from me to cheer him up during those long school hours?