5. If you decide to pursue entrepreneurship full-time after graduating you will be in a perfect position: Malcolm Gladwell says in his book, Outliers, that based on research it takes 10,000 hours to become really good in a particular pursuit. Thatâ€™s 20 hours per week for 10 years, or 40 hours per week for five years.Â Your business will be part-time in college because youâ€™ll need to focus on your classes first and foremost. But 20 hours per week for four years and the experience of starting from scratch will give you a great foundation for picking up speed as an entrepreneur if you decide to keep going with your business (or start a new one) once you graduate. Youâ€™ll also be accustomed to living frugally, so keep living like a college student until youâ€™ve saved a lot of money and made your business an absolutely solid success. With this game plan, you have the potential become a millionaire by 30 or 35. Think big!