In this case, calmness refers to the general resistance to extreme states of excitement, rather than physical calmness. A person can be very very energetic and still perfectly calm.The important thing is not crossing over a threshold in which a state of excitement begins to influence choice and response. As an overly simplified example, think of a child in a toy store. Upon noticing the desired toy, all other thoughts get de-prioritized to the point of ignorance, as the state of arousal takes over and the toy becomes the most important thing on the planet. It is the same reason adults make impulsive purchases that later lead to buyer's remorse. A mastery of the internal calm allows for sound, un-distracted thinking and a distinguished ability let things sit before addressing them, so as to ensure everything has settled and the final decision is, in fact, the right one. Practice developing internal calm through regular periods of quiet contemplation, in which the focus is placed on relaxation, after which that relaxation is carried ;out of the contemplation period and into routine life.

Elements of Mastery