Having clear boundaries is essential to a healthy, balanced lifestyle. A boundary is a personal property line that marks those things for which we are responsible. In other words, boundaries define who we are and who we are not. Boundaries impact all areas of our lives: Physical boundaries help us determine who may touch us, mental boundaries give us the freedom to have our own thoughts, emotional boundaries help us to deal with our own emotions and spiritual boundaries help us to distinguish God's will from our own.