Here's a simple technique that I use to adjust what my mind is thinking about. What I call "Correct Thinking". Initially this is simply a check list of things to monitor while your practicing. The quality of your thinking is essential to monitor in order to extract the maximum benefit from the time spent practicing.
*Monitoring your breathing is a cornerstone in most meditative practices.
**Breathing is the primary way that we humans extract Chi from our environment.
***Good oxygen exchange within our bodies cells is necessary for good health.