Water drops

What do habits and water drops have in common?

A single drop of water has great potential.

Set a glass to capture a drop and come back after a while. Water accumulates slowly when you're looking, but if you forget about it long enough, you'll come back to a full glass.

Move the glass to the side, and every drop falls off the glass. No matter how much time passes, you'll always come back to an empty glass.

Everything adds as long as you take action, and effort accumulates the most when it presents a challenge. Like adding zero to a given amount, exerting no effort leaves you at the same spot.