You really can not motivate another person. The job of the leader or manager is to create an environment where people will motivate themselves. Two elements that help are respect and positive expectations. Respect the individual and believe that they can do it. Believe in them.
Great leaders believe in their people more than their people believe in themselves.
Diversity People behave as part of a group in certain definable ways. All through history we have been able to recognize patterns of behavior. When you are trying to start the perfect team you should have diverse types of behavior present to develop balance. The most common model of behavior styles is the four-quadrant model. It is easy to learn and very practical to use in the work environment.