You now have a better idea of the many ways people can be difficult to work with and why. Note that not all difficult people will fit neatly into the ten categories described above. Also, be aware that you'll encounter difficult people who will behave in the most unconventional and unpredictable ways imaginable - intentionally or not. Be ready for anything. In any event, always be prepared to act decisively. Not dealing with difficult people is a concession that you will allow the sabotage of your ability to manage effectively.