From ‘How Peace of Mind is a Skill That Can Be Developed With Practice‘:
We tend to think that a positive outlook results from external circumstances and forces that are outside of us. Though we might not actually express it so crudely, we intuitively assume that peace of mind results from getting what we want. While this may be partially true in some cases, it is more often the case that peace of mind results from the mindset we choose to adopt about our lives irrespective to what is happening around us.