但我同意这有悲观失望者。

Other than that I agree re the doom and gloom merchants.

我从不沉迷于悲观失望之中.

I never indulge myself in pessimism.

他虽然失败了却没有悲观失望.

Though he had failed, he did not despond.

我们决不悲观失望, 我们是乐观的.

We are optimistic, we shall never become pessimistic or despairing.

我们既不要悲观失望，也不能盲目乐观。

We dont be disheartened, cant be unrealistically optimistic either.

你可以对生活悲观失望甚至逃避，也可以充满信心的投入行动；

Choose in their hands, all you can about life, can also be pessimistic with confidence into action, Anyhow opportunity will only to those who are confident, independent thinking.