Your interviewer will likely want to know the reasons why you will remain motivated to do your best during your employment with the company. Perhaps you are interested in being challenged, but you may also have interest in being recognized for your hard work in the form of the number of sales you can attain. A great example answer for this question is “I always do my best in everything, including my job. I take pride in my success, and I also want the company for which I work to be successful. Being affiliated with a company that is known for its excellence is very important to me.”