In my opinion, understanding who your target audience is, and what they want, and writing to them (and only them!) is the most important component of being successful as an author.
John LockeTo understand political power right, and derive it from its original, we must consider, what state all men are naturally in, and that is, a state of perfect freedom to order their actions, and dispose of their possessions and persons, as they think fit, within the bounds of the law of nature, without asking leave, or depending upon the will of any other man.
John Locke