I am just wondering how do these six departments of the mind dovetail with the six higher-order mental faculties (namely, Reason, Memory, Perceotion, Will, Intuition and Imagination) already naturally endowed in each and every one of us? To a great extent, they over-lap!:

The Structure of Your Mind

Your mind is divided into six departments which are subject to your conscious control. Understanding these departments helps you understand self-discipline.

The six departments are:

1. The ego. The source of willpower. It acts as a supreme court, with the power to reverse, modify, change, or eliminate the entire work of all the other departments.

2. Emotions. Here is generated the driving force which sets your thoughts, plans, and purposes into action.

3. Reason. This is where you weigh, eliminate, and properly evaluate the products of your imagination and emotions.

4. Imagination. This is where you create ideas, plans, and methods of attaining your desired ends.

5. Conscience. Here you test the moral justice of your thoughts, plans, and purposes.

6. The memory. This acts as the keeper of records of all your experiences and as a storehouse for all sense perceptions and inspiration from Infinite Intelligence.