D&D General - What's your best D&D tip (50 words or less)

"When a player rolls a death saving throw, ask them to share a flashback from their character's life."

In my opinion, this is an ideal D&D tip. It is less than 50 words, is easily actionable, and will almost certainly improve your game.

What's your best short D&D tip/hack?

(Note that I originally asked this question on twitter and got some good responses)