Don't you love it when you see something wonderful and it evokes laughter or joy enough to make you cry? Moments when you see children with child-like spirit laughing and playing or you see them spending time with their grandparents and the connection there...it's not just children, also enjoying time with family, friends, your spouse, having dinner with your spouse each night, how special is that...? I believe the Holy Spirit evokes us to emotions at times, laughter or crying with joy.
I was reminded of God's endless love for us, he delights in caring for us, not just providing for our needs, but giving us amazing gifts of friendship, laughter, joy. This verse made me think of these things...the verse in Gen. 21:6 "Sarah said, God has brought me laughter and everyone who hears about this will laugh with me." (regarding her pregnancy in a very old age). As my Bible mentioned, God is the "bringer of laughter", I would add: the bringer of pure joy!
So smile today, whether it be your children, other children, laugh at your mistakes, laugh over spilled milk and others in your presence will laugh with you :)