At the ground level of any job, any industry, you're told what to do. Your contribution revolves around making a contribution on that front. When you step into a management role, you've got to motivate others to do those things. And it's not always easy. That's why HR promotes people that already display serious leadership skills. Prove you can make the transition with this course.
This is one of the most reasonably priced courses on leadership that you'll find on the Udemy platform. And if you want to make the move to a management role even if you're not a natural leader, you're going to want to take note of the principles at play. Unfortunately, it's just difficult to earn the big bucks if you can't move through the ranks. Something to think about.