In your own life, you should take particular care with endings, for their color will forever tinge your memory of the entire relationship and your willingness to reenter it.
Martin SeligmanOnce a depressed person becomes active and hopeful, self-esteem always improves. Bolstering self-esteem without changing hopelessness, without changing passivity, accomplishes nothing.
Martin SeligmanSuccess requires persistence, the ability to not give up in the face of failure. I believe that optimistic explanatory style is the key to persistence.
Martin Seligman