Leverage

Rule #4: Amplify your effort.

Welcome to the Internet.

Your good decisions can be amplified exponentially.

You can connect with anyone on earth that needs what you do.

You can use software to do things that used to require a team.

So what does all this mean?

It means you can build a one-person business with just an internet connection.

Leverage is a core concept of the "Build Once, Sell Twice" playbook. 

Invest effort once, apply it multiple times (via technology).

This applies to the sale of your product, but it also applies to every aspect of your business:

Speak once, stream twice.

Write once, publish twice.

Design once, use twice.

Build once, sell twice.