If we think happy thoughts, we will be happy. If we think miserable thoughts, we will be miserable.
Dale CarnegieLooking at the other person's point of view and arousing in him an eager want for something is not to be construed as manipulating that person so that he will do something that is only for your benefit and his detriment. Each party should gain from the negotiation.
Dale CarnegieCriticism is futile because it puts a person on the defensive and usually makes them strive to justify themselves. Criticism is dangerous, because it wounds a person's precious pride, hurts their sense of importance, and arouses resentment.
Dale CarnegieMillions of people have wrecked their lives in angry turmoil, because they refused to accept the worst; refused to try to improve upon it; refused to salvage what they could from the wreck. Instead of trying to reconstruct their fortunes, they engaged in a bitter and "violent contest with experience"- and ended up victims of that brooding fixation known as melancholia.
Dale Carnegie