How to Fix the Economy

How do we solve inflation, the housing crisis and other aspects of our broken economy? Multiple variations of all kinds of economic theories have been tried over time and yet none have led to a stable, self-sustaining balance, because none has addressed the root cause of nearly every economic malaise.
Could we "Fix" the economy with just four simple words?
The answer is as surprising as it is simple, and it has been staring us in the face for millennia.