A sincere smile tells people that they are appreciated and loved when they come around you. It makes others feel at ease with you. It is also a powerful tool of intimate communication between great friends. You can get things done faster with a sweet smile on your face always.
We're in a world where every day we are being told to try and make a difference for the environment. We're inundated with information about the damage that is being done to the environment on so many levels, and being told we are the culprits.