There is never any doubt in my mind as to the mood of a coworker upon their arrival at work because when I am at work I focus on my own personal goals, duties, and responsibilities not allowing their mood or emotions to effect my job performance. Nonverbal communication is very important when dealing with customers because your assumed mood or attitude can rub off on them and make their experience bad overall. If your mood or attitude is straight forward and clear then the customer won't have to guess or assume and there won't be a miscommunication messing up the business relationship that you may have. Everyone tells me that sometimes my face displays anger or frustration when in reality I am calm, cool, and collective. One day while being a cashier at Walmart a customer came to my line and proceeded to checkout. As he got down to the register to pay for his groceries he told me to cheer up and if this job made me so upset I should find a new one. I laughed and explained to him that that was just how I was looking and not actually feeling. After speaking a couple of words he realized that I indeed was in a pleasant mood and apologized for what he said. I learned that day that I need to work on my facial expressions and keeping a smile on my face. A customer seeing my face upset can lead to them being upset which is not good for business.