Quote from Sir John Lubbock

Quote from Sir John Lubbock:

I can but think that the world would be better and brighter if our teachers would dwell on the duty of happiness as well as the happiness of duty. For we ought to be as bright and genial as we can if only because to be cheerful ourselves is the most effectual contribution to the happiness of others.

Question: What’s one way you’ve brightened someone’s day just by being genuinely cheerful?