Belief-Health

Do you work out? Run? Yoga? Do you engage in some sort of physical activity outside of work because you feel it is relevant to your physical health? I might deduce that you value your physical health and have an idea of what it means to be physically healthy. You might cite your weight, body mass index, blood pressure, resting pulse, cholesterol level to name a few. These, you may say, are indicators of physical health.

Along those lines, what then, is belief-health and what are indicators of belief-health? What is belief-health? Belief-Health is the degree to which your beliefs are consistent with reality. Believing that a circle is defined as a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, the secretion of milk by females for the nourishment of the young, and (typically) the birth of live young, is not consistent with reality. Nor is believing a mammal is defined as a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center), consistent with reality. 

Please join me in citing some examples of belief-health.