The collective unconscious is full of perceptions - positive and negative - which affect the thoughts and feeling that we have.
Therefore prejudice and stereotypes affect how we think and feel about ourselves.
These are like reflections - what those around us in society and beyond think of us. And what we think of others.
These are projected onto the other person and affect their thoughts and feelings.
This can be done maliciously by those who do not have our interests at heart. (For example Satan worshipers working in the unconscious.)
By praying and meditating we create blessings which are beneficial to the other person.
So our thoughts and feelings affect others directly by projection and indirectly by their influence on our actions.