📊 If it weren't for a $100 college course he took when he was 20 years old, the "Oracle of Omaha" might have shorted his own success. According to a CNBC report, Buffett had an extreme fear of public speaking up until the age of 20. "Just the thought of it made me physically ill. I would literally throw up," Buffett told CNBC contributor and "Getting There" author Gillian Zoe Segal. Follow benzinga In his early college days, Buffett would select classes where he knew he wouldn't have to present in front of his classmates. Furthermore, he designed his schedule so he wouldn't have to be in front of crowds. He told Segal that he could barely even introduce himself whenever he found himself in a situation that required him to speak in front of others. Buffett set out to change that when he saw an ad for a Dale Carnegie public speaking course at Columbia's Business School. He signed up and even wrote a check to cover the costs, but shortly after, he reneged on his intentions. "I ju...