What are some mistakes that people who are new to management make?

Originally answered Jan 30, 2017

1. Fail to think for themselves
2. Don’t follow a clear set of moral and ethical principles
3. Look out for themselves first, not their employees
4. Emulate the traits of poor leaders
5. Hire mediocre people who don’t pose a threat to them
6. Wait for annual performance reviews to provide feedback to their employees
7. Communicate negatively and harshly, not praising or thanking their employees
8. Don’t learn how to become a better leader by reading, attending training, and seeking mentors
9. Worry only about the people above them in the organization, not their employees
10. Say one thing while doing another