“With all her other troubles, Joan was frequently bothered by severe headaches. Before closing, Seth gave her advice which can be used by anyone: ‘You should tell yourself frequently, I will only react to constructive suggestions, for this gives you some protection agains your own negative thoughts and those of others. A negative thought, if not erased, will almost certainly result in a negative condition: a momentary despondency, a headache, according to the intensity of the thought.
Now, if you find yourself with a headache, say immediately, ‘That is in the past. Now in this new moment, this the new present, I am already beginning to feel better.‘ Then immediately turn your attention away from the physical condition. Concentrate upon something pleasant, or begin another task.”
Jane Roberts, p. 180, The Seth Material.