If you consider yourself a brand, you are not losing your creativity and freedom--but you are gaining insight. Figuring out your personal brand will only give you insight into your audience and what they want to see from you, which in turn will help your influence grow. A brand is an idea; it is a feeling that someone gets when they think of you and your project or product. If you can give a specific, honed-in feeling to your audience members when they think of YOU, then you will send the message that you want to send.
Kristen Klehr and I discuss how musicians and artists can benefit from thinking about their brand in this informative episode of my new Creative Technology Web Series, Episode 3: "Becoming a Brand".
As you think about your brand, it may help to read "What is Personal Branding?", where you can complete a Personal Branding exercise to get more of an idea of the feelings your brand represents.