Smiling is an important giving. Others are more likely to feel happy, warm, welcome, relaxed, safe when greeted with a smile. The good feeling in response to a smile may last only a short time, or it may stay with the person for a long time. It may result in the person smiling or being more cheerful to the next person, so the smile becomes a gift that keeps on giving. What I feel seems to readily show on my face, be it sadness, depression, irritation, anger, happiness, excitement. I've had many experiences of someone responding positively to my smiling, including to smile back. Life is difficult, and a smile can be a dose of free medicine to provide a bit of relief or make a big difference. You never know. Smiling is its own reward, and the practice of smiling fosters my giving more smiles and other kindnesses.