Make more than you take.
This is an article about a set of closely related ideas that loosely form a fundamental principle of personal finance, living in surplus. It's a generally good practice in many facets of life. It is so central that every wealthy person alive practices some version of it.
Always make more than you take. Do more than you need to for yourself.
Be a net giver. Create at least as much value as you use. Carry your weight.
Maintain an annual income greater than or equal to your expenses.
Follow this basic finance principle and your wealth will never decrease.