When I begin directing a theatre production, I give the entire company three pieces of advice at the end of my speech at the first rehearsal.  At the half-way point of the rehearsal process, I remind them of these three items, and on closing night, as we gather in our final circle-up following the closing curtain, I offer the advice one last time.

If, on your journey through life should you see someone without a smile, always share your smile.

If, on your journey through life should you see someone who needs a hug, always, always share your hugs.

If, on your journey through life should you see someone without any color in their life, always, always, always share your crayons.