50-30-20 Rule for Living

This is the 50-30-20 Theory: 

50% of what you make after taxes is the money that goes in your bank account for your essentials -- Roof, Utility bills, Grocery bills and transportation to and from work.

30% is for your lifestyle -- Shopping, Going out to eat, etc.

20% goes to the future -- Savings, 401 K and emergency savings.

AND THAT, is Living within your means.