Greet three strangers with a smile or hello

Offer a friendly nod, smile or greeting to people you pass today.

Why it helps

Brief friendly contact with strangers often lifts mood on both sides. It reminds us that most people are decent and approachable.

How to do it

1. Choose a place such as your street, lift or shop.
2. Make eye contact and say hello or smile.
3. Move on without expecting anything back.

Make it easier

Greet just one person today.

Make it harder

Add a short comment, like 'Lovely day, isn't it?'.

Read the situation; if someone seems unwilling to chat, just let it go.