Warren Buffett says boosting your net worth by at least 50% has nothing to do with stock picking but is about communication. In a resurfaced LinkedIn video first reported by CNBC, the Berkshire Hathaway CEO explained that sharpening written and verbal communication skills is the “one easy way” to become more valuable. Buffett shared that public speaking once terrified him so badly that he would vomit at the thought. A $100 public speaking course after graduating from Columbia Business School changed the course of his life, making him a more confident communicator. The Oracle of Omaha is now worth an estimated $165 billion.