All must decide if they should listen to what you have to say, or buy what you have to sell. Your success depends on your ability to sell yourself.
Many professionals fail to make the personal sale, and as a result, they fall short of their goals.
Deals don't get sealed, contracts fall through, and their income comes up short because of their inability to promote themselves, as well as their products. Self-promotion is, in fact, good customer service because it helps prospective employers make a buying decision. You need to stand out from the crowd. Know what you have to offer that other candidates don't. In order to sell yourself, you need to create your own commercial.