การดู
10:49
Simon Sinek’s guide to leadership | MotivationArk
4:28
How To Be Assertive and Speak Powerfully (Don't Be too Polite)
2:36
How to Leverage Being an Introvert | Simon Sinek
3:21
good teamwork and bad teamwork
10:24
5 Rules for Communicating Effectively with Executives
2:26
Steve Jobs talks about managing people
15:07
How to Deal with Difficult People | Jay Johnson | TEDxLivoniaCCLibrary
7:44
The Four Workplace Bully Types
