The short answer is you won't invest money; you'll use it for another expense or to reduce a liability against you. The medium answer involves understanding yo

The short answer is you won't invest money; you'll use it for another expense or to reduce a liability against you. The medium answer involves understanding your finances to know how 25/week on Starbucks impacts your budget. Is it 1%? Is it 10%? The much longer answer involves analyzing the stock market and spending habits, and understanding that to become wealthy in the sense referred here, managing your money is only a part of, you do need to work on generating a lot of income.