Similarly, instead of having a disciplined body we indulge our body all the time - be it sex, food or being a couch potato. Indulging in some of these now and then provides spice but we mostly only live for these things resulting in total deterioration of the body. A disciplined body is a must to be able to achieve anything worthwhile. Its the vehicle through which all our actions are performed in this world.
Finally, our hearts are a social mirror. There is seldom anything that we are passionate about. Likes and dislikes are tailored to accomplish social acceptance.
An individual who transcends these boundaries of the body, mind and heart is a whole individual who constantly inspires people around to find their own internal voice and transcend these boundaries.