Anybody can become angry - that is easy, but to be angry with the right person and to the right degree and at the right time and for the right purpose, and in the right way - that is not within everybody's power and is not easy.
All human actions have one or more of these seven causes: chance, nature, compulsions, habit, reason, passion, desire.
Friends hold a mirror up to each other; through that mirror they can see each other in ways that would not otherwise be accessible to them, and it is this mirroring that helps them improve themselves as persons.
The person we believe ourselves to be will always act in a manner consistent with our self-image. - Brian Tracy
Be cool to people. Be nice to as many people as you can. Smile to as many people as you can, and have them smile back at you.