A person's closest friends' appearance shows their nature. I often tell myself I don't make particular pals. Not because I consider myself better.
Humans have evolved to care regarding what others think and whether they are embraced or rejected.
You can tell a person's actual character by how they treat others, especially when they get nothing in return.
People can be delighted, envious, or apathetic when others succeed. When you announce your success, watch people's faces and body language.
How someone treats people below them in rank and authority can reveal much about them.
Privilege can make people dictatorial, overbearing, and arrogant. They disregard others.
Social interactions can reveal a person's character. Do they always want the spotlight? Are they chatting more than listening? Are they interruptive?
Being thankful, appreciative, and recognizing your life's goodness and others' goodwill is it.