No one was born as a manager. In fact most people are promoted to management because they are good at what they do. Usually that means they have strong technical skills whether 

 in engineering, architecture, sales or HR. Seeing the great job an employee does we decide to promote them based on those skills and want them to provide the organization with continued success by giving them a team. The problem is that we don't always give people the skills they need to be successful managers.

It is flattering to get promoted because of success on the job.  New managers want to continue that success but too few organizations give them the time, space and education to learn and grow.We need managers to have the leadership tools and skills they need to effectively manage and develop their people. Unfortunately, good teachers do not always make good principals; doctors don't necessarily make good hospital administrators, engineers do not necessarily make good project managers, and so on.