You can be a successful sales representative by being good at talking, but you can be a proficient sales representative by learning to listen before you speak. I feel that if you can first and foremost conduct a positive interview, get to know an individual's needs before you explain why you meet or exceed all of them, you're able to provide not only a product or service, but peace of mind to that client that they can come to you for anything. A successful sales representative is not somebody who can make a quick sale, make a good commission and get out of there. A successful sales representative is somebody that everybody remembers and returns to and brings more business to. Being dependable and being open-eared are the most important qualities in a successful and proficient sales representative, in my opinion.