You must first get educated. Taking classes, reading, getting therapy. Kee said pessimism leads to health problems and downward spirals into depression. He pointed out that optimism is a much more realistic outlook on life. Factors in your life lead to these reactions.
Daily hassles are one form of stress, and they add up.
Any major changes cause added stress. To think things should never happen to you or that everything should be a certain way is not being realistic. Put the bill collecters on hold, kick the car, have faith in your abilities and spend a few moments holding your sick child. Grasp life and the beauty that comes with it. Live life on the upside and let all the negatives roll away.