Bear in mind that the longer you stay tuned to either Channel P or Channel N, the more interested you become and the harder it is to switch channels. This is true because one thought, positive or negative, sets off a whole chain reaction of similar thought. You may, for example, start off with such a simple minor negative thought as a person’s accent and find yourself soon thinking negatively about such unrelated topics as his political and religious beliefs, the car he drives, his personal habits, his relationship with his wife, even the way he combs his hair. And thinking this way surely
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