The main reason why your company can easily influence you is because "emotion and attitude are stronger than knowledge". What you see can overcome what you know. You can easily damp away what you already know when you are faced with the reality of what your senses tell you to do!
Israelmore Ayivor, The Great Hand Book of Quotes
companion, companionship, company, damp, emotion, food-for-thought, friends, influence, israelmore-ayivor, knowledge, overcome, reality, senses, stronger, tell