Enneagram Institute
The Enneagram system is a complex but very revealing personality typing system. It consists of Nine basic personality types, which are identified by number but sometimes are given a general name to describe them. They are:

Type One: The Reformer: principled, purposeful, self-controlled, and perfectionistic.

Type Two: The Helper: generous, demonstrative, people-pleasing, and possessive.

Type Three: The Achiever: adaptable, excelling, driven, and image-conscious.

Type Four: The Individualist: expressive, dramatic, self-absorbed, and temperamental.

Type Five: The Investigator: perceptive, innovative, secretive, and isolated.

Type Six: The Loyalist: engaging, responsible, anxious, and suspicious.

Type Seven: The Enthusiast: spontaneous, versatile, acquisitive, and scattered.

Type Eight: The Challenger: self-confident, decisive, willful, and confrontational.

Type Nine: The Peacemaker: receptive, reassuring, complacent, and resigned.

As you can see, the short description for each type included both the good and bad parts of that personality type. Once you’ve determined your type, you will also find that you tend to have what is termed a “wing,” or the type you lean toward on either side of your main type. For example, you could be a Type Six with leanings toward either the Type Five or Type Seven personality.

Each personality type also features three main levels, with three levels within each of those main levels of personality development. Each personality displays different levels of unhealthy, average, and healthy behavior.

At the Healthy Level, the most redeemed personalities have achieved Level One: The Level of Liberation. Level Two is the Level of Psychological Capacity and Level Three is the Level of Social Value. At the Average Level, Level Four is the Level of Imbalance/ Social Role; Level Five is the Level of Interpersonal Control; and Level Six is the Level of Overcompensation. Finally, at its most Unhealthy Level, personality aspects will see Level Seven, the Level of Violation; Level Eight, the Level of Obsession and Compulsion; and Level Nine, the Level of Pathological Destructiveness.

The idea of Shadow Work is to take all those personality components at the Average and Unhealthy Levels and draw them into the Healthy Level.

You will find LOADS of information on the Enneagram, as well as the tests and more detailed descriptions at The Enneagram Institute website. If you sign up for a free membership, you can have a daily Enneathought sent to you by email, which helps in better understanding your personality type.