They grow up and become toddlers, then kids, then teens and finally they move out as adults.
While they are little though, they are made of good day "stuff". So much of their lives are filled with firsts. From the time they can hold their heads up by themselves to their first romantic kiss and all the things in between make their lives a time filled with wonder.
Sadly, for some, life ceases to have many firsts after a certain age. It ceases to have wonder.
To make today a good day, a sprinkling of wonderment might be useful. A little joyful exuberance here and there might make what has become ordinary extra-ordinary.
Looking through the day with the eyes of a child can make today a good day. Planning some "firsts" again can make today a better day.
If there is a kid in your life, take some lessons. Go play, have fun, show them that growing up isn't the end. Show them that today is a good day.