Quote from : The Story of Buddhism: A Concise Guide to Its History & Teachings Book

To seek the self, one must first have a clear idea of what one is looking for. Thus, some meditation manuals advise actively cultivating the sense of self, despite the fact that this sense is the target of the analysis. Our sense of identity is often vaguely felt. Sometimes, for example, we identify with the body, saying, "I am sick." At other times, one is the owner of the body, "My stomach hurts." It is said that by imagining a moment of great pride or imagining a false accusation, a strong and palpable sense of the "I" appears in the center [of] the chest: "I did it," or, "I did not do that." This sense of self is to be carefully cultivated, until one is convinced of its reality. One then sets out to find this self, reasoning that, if it exists, it must be located somewhere in the mind or the body.