One theory that I have about 'mind over mater,' ki, anything along that matter is that if you believe that what ever you do will work, it will work. The placebo affect. If you wanted to begin controlling your ki, you will first have to BELIEVE that you can, or that your ki actully exists. you must do this before you use your ki. One very basic exercise that I have used even before knowing about ki,chi, etc. was to say or think to yourself that the pain doesn't exist. This also works if you are cold.