Knowing oneself and knowing one another can make every battle a success. This sentence also applies to interpersonal communication. A person must first understand himself before he can understand others; anyone can only trust those who fully understand him, including himself. Imagine if a person does not understand at all You, how can he be trusted? From this you can exit:. ['You can trust others only if you trust yourself.', "If you don't know yourself, you won't be trusted by anyone.", 'He knows you well, so he deserves your trust.', 'Know yourself well enough to gain the trust of many people.']