• The external cannot enter the internal.
• The external cannot contact or touch the internal.
• Never blame the external for the state of the internal.
• The disturbance in the internal is due to some internal things—internal things that you can choose to analyze, cast out, contemplate, examine, feed, meditate, let pass, repeat, or reveal in the light.
• The external is used as a basis for examples, excuses, pressures, proddings, pulls, pushes, opinions, reasons, and temptations for self-disturbance, but the external never becomes an actual cause or a responsible force for the internal state.