People help you experience the effects of whatever you are taking as truth.
If your mind values Peace, you express gratitude for people no matter how they show up. If your mind value conflict, it looks for ways to condemn people and insist that they have done wrong.
Just noticing what the mind deems valuable based on its expression allows an immediate reconfiguration of beliefs according to your best interest. Moreover, said noticing detaches you from the movement of mind, and allows you to experience deep rest even while the mind engages in confusion and conflict.