A person’s behavioral habits are often long-term cultivated, reflecting their internal values and beliefs. If a person treats the people around them with friendliness, respect, and kindness, they are also more likely to be friendly to you. Conversely, if a person treats the people around them with indifference, selfishness, and impoliteness, they are also more likely to be indifferent, selfish, and impolite to you.
The philosophy of life: Don't look at how this person treats you, look at how they treat everyone else around them.
This article explores the relationship between personal habits and one's intrinsic values and beliefs, suggesting that how a person treats others often reflects how they will treat you.