Doubt is an uneasy and dissatisfied state from which we struggle to free ourselves and pass into the state of belief while the latter is a calm and satisfactory state which we do not wish to avoid, or to change to a belief in anything else. – Charles Sanders Peirce

I have always argued that change becomes stressful and overwhelming only when youve lost any sense of the constancy of your life. You need firm ground to stand on. From there, you can deal with that change. – Richard Nelson Bolles