First, you would never entertain negative thoughts in your mind again. Second, if a negative thought did happen to slip in, you would get it out of your mind immediately. You would think of something else, deliberately. You would simply change your mind about that. Third, you would begin to not only understand Who You Really Are, but to honor and demonstrate that. That is, you would move from what you Know to what you Experience as the measure of your own evolution. Fourth, you would love yourself fully, just as you are.
