a bit strange to realize that the act of smiling can itself make you happy. It’s a perfect illustration of just how close the links are between the mind and body. Smiling is infectious too. When you see someone grin, you almost invariably smile back. You can’t help it. Think about that for a moment: just the act of smiling can make you happy (even if it’s forced); and if you smile, others will smile back at you, reinforcing your own happiness. It’s a virtuous circle.
