This is a common question. Even though candidates are told to expect this question, they often don't answer the question as best as possible. The candidate should be honest with their answer and make sure to present themselves in a desirable light. The candidate should avoid answers that would preclude them from the job or portray them negatively (i.e., I tend to procrastinate when I don't want to do something, I don't really like working with others). The candidate should also avoid an answer that seems disingenuous (i.e., I am just too much of a perfectionist, I hate being late too much). If the candidate is early in their career or coming to a new company or industry, it is acceptable to mention that they do not have a detailed knowledge of the business and processes they will be working around.