Why Everyone Eventually Fails at Work
In many companies, people are promoted until they finally reach a job they are terrible at. Once they hit this ceiling of incompetence, they stop moving up and stay stuck in a role they cannot handle.
This phenomenon occurs because success in your current position is often mistaken for the skill set needed for a promotion. However, a great salesperson rarely has the specific tools needed to be an effective manager. Because businesses prioritize past performance over future potential, they often break their own best workers. You might be watching this play out in your office right now without even realizing it.
Source: Peter principle