I am a grumpy person sometimes for obvious reasons and with the most valid reasons but I used to be happy and was smiling always especially in my high school years when I was still energetic and near normal and it was noticed by one of my high school classmates at one point and made them call me "Smiley" because he never had seen me not smiling.
Smiling is a positive thing to see in a person, it may mean that he is happy for the most part but some smiles denotes negative vibes. But laughter is much more a good thing to see in a person, a person who always jokes around making others laugh will always be the center of the group and I have experienced myself that they are really life of the party.
Life is hard and in fact we have to really move, work around, use our talents, skills, wits, body, resources in order to survive this world so sometimes we have to smile a bit so that it may beget laughter which then will make things happy even for a little while.
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