'Everybody feels stress and knows it intimately, but very few of us think about what stress actually is.
Stress is a thought. That’s it. No more, no less. If that’s true, then we have complete control over stress, because it’s not something that happens to us but something that happens in us.
The dictionary definition of stress is, “bodily or mental tension resulting from factors that tend to alter an existent equilibrium.” It is your thoughts out of balance.
The medical definition of stress is, “the perception of a real or imagined threat to your body or your ego.” It could be a tiger chasing you or your belief that your spouse is mad at you (even if he or she is not). Whether it is real or imagined, when you perceive something as stressful, it creates the same response in the body.'