Lots of good ideas on building wealth. Over decades, not five years. Becoming a millionaire (let alone a billionaire) in five years is pure fantasy for nearly anyone. If you make $150k you're already far above the average. Count taxes and expenses, and you're lucky (or incredibly frugal) to be able to set aside $50k a year. Over five years, assuming a far greater than average return of 18% a year, you have less than $500k. And that's with multiple unlikely assumptions.