It is the sum total of the habits of all beings and things. Even a piece of rock can be said to be subject to a habit pattern. Unlike the behavior of a human being, which can be varied and occasionally even surprising, a rock's behavior is largely static and totally predictable. It is behavior nonetheless, unless we insist on restricting the use of this term only to animate or sentient beings. Yet rigidity is a matter of degree, and we can witness a wide range of responsiveness in members of the human species.
Some individuals are more rigid and predictable than others.
Some behave like clockwork, others are out of control. There is a marked lethargy in the human psyche, and resistance to change is deep seated in us. We all seem to fear change, and with some people this fear is so overwhelming that it paralyzes them. Yet, they may be daredevils only in certain areas, while in others they are dominated by the kind of arrested development that springs from fear. At the peak, way above the timber line, they sense a freedom that escapes them in the valley.