You shouldn't always be angry with someone.
Trevor, who is not the most patient person, manages a specialized team at work.
Trevor wants his team's work to always be perfect.
Trevor encourages his employees to always do their best and to review each other's work.
Trevor micromanages his employees and angrily badgers them until their work is flawless.
Trevor's employees feel valued and proud of the quality of their work.
Trevor's employees feel harried and stressed out, and hate him.