Smile to everybody you have eye contact with. An idea from Li

He did that already in the opening video...

Yes I know. I wrote this idea down before I saw the opening video ;)

But doing for a month is a different experience then 1 hour!!

True. It's still a nice idea. If some stranger on the street smiles at me (which is a rare thing) it does make my world a little better.

Dear Maarten, this is not a challenge, you already do this

Hehehe, I'm doing my best Sarah!! When I'm tired it's more difficult...