Profit First

As Mike Michalowicz puts it: The old, been-around-forever, profitless formula is: Sales-Expenses = Profit. 
The new, Profit First Formula is: Sales-Profit = Expenses. 

The math in both formulas is the same. Logically, nothing has changed. But Profit First speaks to human behavior-it accounts for the regular Joes of the world.

Spend less, spend wise.