PR.com (press release) - Levittown, NY, USA - Premier business coach Machen MacDonald of the ProBrilliance Leadership Institute has become a #1 best selling author with his new book - The Power of Coaching… Engaging Excellence in Others! The book hit #1 in several categories on Amazon.com. MacDonald, the founder of ProBrilliance Leadership Institute located in Grass Valley, CA and a certified business and life coach has compiled a wonderful resource full of both wisdom and strategy to help managers and leaders become better at coaching their people for desired results.

MacDonald had the idea for the book in January of this year and in three months by March