I'm going to play this computer game for the next 10 days. They are going to email me things to try like feeding birds or something to make me happier. I'm stoked. I'll report my findings. I kinda love the banal platitudinal vibe of this presentation mixed with the slight feel of "Is this an ARG or a cult?" Seriously though, I think it is probably safe.
https://10daysofhappiness.org