Read biographies of rich people and you will find out that none of them limited themselves to just one major. Bill Gates studied not only computer science but also law and math. Mark Zuckerberg studied not only programming but also psychology. An ambitious businessman needs to be knowledgeable in different branches, otherwise he will never become successful. Luckily enough, nowadays there are plenty of opportunities for self-development and self-education. If you are short of time, you can always learn online. It's very convenient! Online tutoring platforms like https://www.skooli.com, https://www.etutorworld.com, https://eurekly.com, etc. offer a wide range of tutoring services helping you to learn from home. And which discipline are you considering as your major?