A little bit of knowledge of herself, supplied by a good friend, made all the difference. Successful companies are defined very carefully with slogans and branding, logos and advertising. They also know what makes them special, and they hire image-makers to communicate how special they are. You are your own image-maker. Think about your business card.
Business cards make powerful statements.
If yours is black and white and just lists your name, phone, and address, you're operating a century behind the times. The messages you send, whether you're pitching a client or talking to your hairdresser or barber, should present the person you really are. Being quiet, shy, or unsure makes a certain impression. So does babbling on and on about yourself. Knowing yourself includes knowing how you are being perceived.