This is as much about controlling the psychological environment as it is the physical. Computer programmers have a phrase: Garbage In/Garbage Out. If we apply the analogy, this means: ° the verbal, visual and gestural language that we allow to take up residence in our heads; ° the toxins like alcohol, drugs or sugar that we allow to take up residence in our bodies (and minds); ° the people we allow to take up space in our lives.

