Psychic mind control is a deep and interesting subject. Let's mention three kinds of psychic mind control: intrapersonal, collective, and interpersonal.
Intrapersonal psychic mind control is the kind which a person exerts upon himself. It is mostly subconscious and it contains all the psychological self-defense mechanisms a person has. This kind of control can be useful but also limiting. If it is conscious and beneficial, it is called 'self-control' or 'self-discipline'.
Collective psychic mind control is not something that is easy to point out, but its effects are everywhere. It is said that humans are social animals; how we think, feel or act greatly influences the people around us - and we are influenced by the behavior of others even more. Such collective behavior exerts sublime control over our identities, minds and actions.
Interpersonal psychic mind control is what we usually envision when we think of mind control: the mind of one person overriding the conscious decisions of another person. On one end, it consists of persuasion - the ability to influence the decisions of others by sharing some kind of logic. On the other end, it relies on subtly changing the reality that person experiences.
The self-discipline part of psychic mind control is the one worth pursuing most. Knowing yourself offers you spiritual riches and your path through life becomes clearer as well. If you know yourself, you also become more adept at noticing the collective fabric of reality and you will be less constrained by it. Finally, a clear and disciplined mind has a constant 'overriding' effect on others as well: flashes of enlightened insight hit those around you more often.