" The cause of most stress can be summed up by the word attachment. Self 1 gets so dependent upon things, situations, people and concepts within its experience that when change occurs or seems about to occur, it feels threatened. Freedom from stress does not necessarily involve giving up anything, but rather being able to let go of anything, when necessary, and know that one will still be all right. It comes from being more independent—not necessarily more solitary, but more reliant on one’s own inner resources for stability. "

― W. Timothy Gallwey , The Inner Game of Stress: Outsmart Life's Challenges and Fulfill Your Potential