"True. The Sages of Sivana pioneered that concept. Though it has been around for centuries, its application is just as relevant today as it was when it was first developed. Too many of us are consumed by needless and endless worry. This drains us of our natural vitality and energy. Have you ever seen the inner tube of a bicycle tire?" "Of course." "When it is fully inflated, it can easily take you to your destination. But if there are leaks in it, the tube eventually deflates, and your journey comes to an abrupt end. This is also how the mind works. Worry causes your precious mental energy and potential to leak, just like air leaking out of an inner tube. Soon, you have no energy left. All of your creativity, optimism and motivation has been drained, leaving you exhausted."