A person who tries to be a goswami is careful not to engage in those activities that are harmful to his spiritual development. For example, he refrains from taking intoxicants (including all sorts of drugs, alcohol, cigarettes, and so on); from having illicit sex; from gambling; and from eating meat, fish, and eggs.
So a person's entire lifestyle can be dovetailed with his deep purpose in life. Such a person is the controller of his body, not a slave of his senses. Most people are servants of their senses and minds—they are godas (go means “senses”; das means “servant”). A bhakti yogi, however, strives to be a goswami (swami means “master,” and so goswami means “master of the senses”). A goswami is not dragged around by his senses, but instead uses his senses for his own desired purposes. Although goswami is also a title, in fact the real meaning of goswami is controller of the senses, whether one is externally with the title goswami, brahmachari, householder, or whatever.