I'm not sure with that way, how can we earn more money if we just get fixed salary every month. And I think your way isnt the best way to save money, but the way to get profit in investment way. So, the point I get is, with our money, we invest it to earn more. cmiiw
they pay grebit cause he is awesome bro
The ideology about increasing savings by earning more money is a sort of a motivation that you should work harder and earn more money by discovering more work opportunities and increasing your finances rather than finding methods to save money, noting that there is a need of saving which indicates that a person might be in short of money later that's why he is saving 
Although we need motivation to earn money, but we have to take decision how to save our money. If we just earn money without make any plan to save it, then there is possibility for us to spend it anyway, not for saving.