This is SO much fun. I am naturally a bit of a shy one, so smiling at random people is not really my thing, but I cannot help but confess that I am just loving it. I smiled at a bus driver, a woman with a baby, a guy at the bus station, and some others too. And the more I do it the easier it gets. It catches people by surprise, but most of them return your smile, which just feels great!
You should really try this one, it is a bit addictive :) 1 month ago