If the problem can be solved why worry? If the problem cannot be solved worrying will do you no good.
ShantidevaAll the harm, fear, and suffering in the world are caused by attachment to the self: Why should I hold on to this great demon?
ShantidevaThose desiring to escape from suffering hasten right toward suffering. With the very desire for happiness, out of delusion they destroy their own happiness as if it were an enemy
ShantidevaMy body, thus, and all my good besides, And all my merits gained and to be gained, I give them all away withholding nothing To bring about the benefit of beings.
Shantideva