Then give them their freedom to work the problems out in their own way.

Give them responsibility, trust them, and then leave them alone.

_Quit your worrying_ about them.

Give them a fair chance, expect, demand results, and if they fail, fire them and get those who are more competent.

Mistrust and worry in the employer lead to uncertainty and worry in the employee and these soon spell out failure.
In subsequent chapters, various worries are discussed, with their causes and cures.