In 1989, Bill Harris started Centerpointe Research Institute on his kitchen table with equipment borrowed from friends. By 2002, over 100,000 people in 172 countries had benefited from Centrepointe's remarkable Holosync audio technology and in-depth support services, creating deep and lasting changes in their mental, emotional and spiritual health. In the process Centerpointe became one of the fastest growing companies in the personal growth field. "Bill Harris comes from deep personal experience with healing and consciousness. Thresholds of the Mind is truly inspiring and filled with profound wisdom. Holosync is the perfect addition to other growth and spiritual practices." Margaret Paul, Ph.D. Author/co-author, "Do I Have Top Give up Me to Be Loved by You?".