Can you go for 21 days without complaining, criticising, or gossiping?

TL;DR Yes, but it will take a lot longer than 21 days 😁

The challenge is to go for 21 consecutive days without complaining, criticising, or gossiping. If you catch yourself doing any of these things, you have to start the 21 days again from day 1. You wear a bracelet, or have some other physical thing like a coin in a pocket and do a physical action - swap wrists or pockets each time you complain, ctiticise or gossip.