So much of our decision making including decision influencing our behavior begin and take place deep within your subconscious mind. We are often creating responses, ideas, and feelings far before we are consciously aware of it. Because of this , it is important to understand that the environment, entertainment, and energy you place yourself around can (and quite quickly) shift your thinking. This shift can have influence both thought and actions w/o acknowledgment, understanding, or even desire.
You are still influenced.
It is this conscious action and moment through life that can be a detriment to our growth and development.