It’s also important to remember that no one is ‘the bad guy’ or ‘the best friend’ or ‘the whore with a heart of gold’ in real life; in real life we each of us regard ourselves as the main character, the protagonist, the big cheese; the camera is on us, baby. If you can bring this attitude into your fiction, you may not find it easier to create brilliant characters, but it will be harder for you to create the sort of one-dimensional dopes that populate so much pop fiction.