A coach is looking to help people achieve outstanding performance in any field. E.g. The Tennis Coach for example: 1.focus  the mind of the individual and to prevent distractions. 2. Improve the performance and to sharpen the abilities of the tennis player. 3. To Set Goals and to visualise those goals being achieved. 4.to give constructive feedback even if unpalatable sometimes. 5.To enable to compete at tournaments at the highest level.

 However the coach can then transfer the skills that he or she possesses in order to coach people in other areas of their lives. Its not only personally and professionally fufilling,but can be profitable.Thats why its so popular as a career choice and many people who are seeking something worthwhile with their lives are attracted to coaching.
As a coach you need to invest time and money in your personal self development. So you can be effective and achieve results for your clients.

The best and most successful coaches never stop learning.If you are interested in becoming a coach. Then you can find many courses on "Life Coaching" or even "Business Coaching". There are recognised coaching academies all over the U.K. and the world. You can even learn from home through a home study or online course. Go onto "Youtube" and watch the videos or invest money and buy books on Amazon.