A negative outlook is more of a handicap than any physical injury.

I believe that a person should take an affirmative outlook. There are always problems in life, old and new, uncertainties, and unexpected contingencies. The optimal way to deal with this is not to give up in despair, but to move ahead using the best intelligence and resources that we have to overcome adversity.

I believe that I've got an almost built-in optimism. And I occupy myself more with problems of understanding and conviction than with problems of feelings or depression. On the contrary, I think that I am quite optimistic. It is Marxism, Chairman Mao, who has made us understand that people, especially communists, are optimists. Whenever I find myself in a difficult situation I strive to look for its positive aspect or for what potential for development may stillexist within that situation, because nothing is completely black, nor is anything completely red. Even if there were to be a big defeat, even though we have not had one yet, there would always be a positive aspect. The point is to draw out the lessons, and continue to do our work based on the positive aspect. You will always find someone to support you, to lend their ardent enthusiasm and assistance to the struggle, because communism unites people.

We just need to be more optimistic.

[T]he optimist’s impatience with or condemnation of pessimism often has a smug macho tone to it (although males have no monopoly of it). There is a scorn for the perceived weakness of the pessimist who should instead ‘grin and bear it’. This view is defective for the same reason that macho views about other kinds of suffering are defective. It is an indifference to or inappropriate denial of suffering, whether one’s own or that of others. The injunction to ‘look on the bright side’ should be greeted with a large dose of both scepticism and cynicism. To insist that the bright side is always the right side is to put ideology before the evidence. Every cloud, to change metaphors, may have a silver lining, but it may very often be the cloud rather than the lining on which one should focus if one is to avoid being drenched by self-deception. Cheery optimists have a much less realistic view of themselves than do those who are depressed.

I'm not an optimist. I'm hopeful.

We need optimism and confidence to keep going and convince others to join our cause, but negativity and pessimism help us see problems so we can make them better. Yes, the former feel much better, but both are necessary.

optimism is a form of positive leverage

Somehow, you need to cling to your optimism. Always look for the silver lining. Always look for the best in people. Try to see things through the eyes of a child. See the wonder in the simplest things. Never stop dreaming. Believe anything is possible.

My brand of optimism is based on my denying myself any sense of victimization and taking comfort in the fact that whatever difficulties present themselves today, they will not exist tomorrow. I believe that by pushing hard enough, you will eventually end up somewhere better. Some have observed that I have an "iron spine." I prefer to see it as a process of figuring out how to channel every challenge into an opportunity. That mentality, which worked in the state house, has always worked for me.

If you are genetically endowed with an optimistic bias, you hardly need to be told that you are a lucky person — you already feel fortunate. An optimistic attitude is largely inherited, and it is part of a general disposition for well-being, which may also include a preference for seeing the bright side of everything. If you were allowed one wish for your child, seriously consider wishing him or her optimism. Optimists are normally cheerful and happy, and therefore popular; they are resilient in adapting to failures and hardships, their chances of clinical depression are reduced, their immune system is stronger, they take better care of their health, they feel healthier than others and are in fact likely to live longer. A study of people who exaggerate their expected life span beyond actuarial predictions showed that they work longer hours, are more optimistic about their future income, are more likely to remarry after divorce (the classic “triumph of hope over experience”), and are more prone to bet on individual stocks.

You know, if you're hopeful, if you're even a little bit happy about something that might happen, it doesn't affect the outcome. You could still give yourself a period of optimism, even if it all falls apart.

optimism is a disease

People assume it’s a matter of personality, the difference between optimists and pessimists. But I believe it all comes down to an inability to forget. The greater your powers of retention, the slimmer your chances at optimism.