First, you have to give the world a smile.
Each day, I will try to greet the world with a true smile, whether I feel like it or not. I think that is what he meant - to literally start out with a smile on your face. To do this requires starting each day fresh, and not with the burdens and cares from the previous days.
And each time I endeavor to take on a new project, large or small, instead of allowing past failures and defeats to overshadow my attempt, I will start with a smile. I will dive in with a cheerful heart.
Finally, and what reveals my motivations and is the most important part behind this, I will teach my children to do the same. Hopefully, I will capture some of that smiling here.