Human Resources is one of the most complicated areas of business. Essentially, it’s the glue that keeps all employees working together. When people go to business schools and study HR, professors will give students information pretty much by the book. However, in the real business world, there are many more situations that you will encounter that may not have a textbook answer. With that being said, here are 10 HR lessons that your business professor never taught you. If after this list, you don’t feel more confident about HR, then you might want to consider getting out of HR.