Starting a business coaching management sales sound like a good idea and the training is available.
However, coaching professional sales
people, managers, or reps can not be done by ordinary people. These
guys are coaching performance techniques that not all people
understand or even believe yet. If you want to become a sales coach,
it will take a lot of studying, practice and application to be
convincing. Are you ready for the task? If you are going to get trained, go for the best not the cheapest.
Probably the best place to start is to get a job as a salesperson.
You will either love it and become addicted or hate it. It depends mostly on your character and personality. Having said that, anyone can learn to be successful in sales and at coaching, if they believe that they can and do the work.