All spiritual traditions have contemplations and meditations to encourage mindful living. Consider the following:

Buddhism
A Koan – from Zen Buddhism – is a short story or metaphor to encourage the reader to observe what has always been there for the first time. Koans are designed to immerse individuals in thought, and thus help them become conscious of the ultimate reality.

What is the colour of wind?

A fish went to a queen fish and asked: "I have always heard about the sea, but what is this sea? Where is it?"
The queen fish explained: "You live, move, and have your being in the sea. The sea is within you and without you, and you are made of sea, and you will end in sea. The sea surrounds you as your own being."

What happens to the hole when the cheese is gone?

Wisdom is like a mass of fire -- it cannot be entered from any side. Wisdom is like a clear cool pool -- it can be entered from any side.