The document discusses four key responsibilities of a CEO and things they should not do within each responsibility. The four responsibilities are strategy, financing, team, and removing obstacles. For strategy, a CEO should not ignore feedback, do other people's jobs, get caught in daily tasks, or miss market changes. For financing, a CEO should not run out of money, be unaware of cash flow, lack a business model, or fail to settle payments. For the team, a CEO should not build the company around themselves, hire underqualified people, forget to reward hard work, or allow a negative attitude. For removing obstacles, a CEO should not fail to work out workflows, hire only for growth, or neglect talking to customers.