What Does It Mean To Be A Buddhist?

To me, the heart of Buddhist practice is daily sitting. I find sitting in general makes me less reactive and more aware in life. I tend to feel better about the choices that I make and how I interact with people when I am sitting regularly compared with when I am not. I also have noticed that I enjoy life, going about it more consciously and with greater choice, patience, and spaciousness, when I have been sitting.