In a sense yes, though that's an oversimplification.

no, but it would help

More than any such believing, it is hope that makes life less difficult. Hope is a belief in a positive outcome related to events and circumstances in one's life. Hope implies a certain amount of perseverance i.e. believing that a positive outcome is possible even when there is some evidence to the contrary. A person who dreads of 'what tomorrow may bring' looses the zeal of life itself. He can not live in the present even for one day. I do not agree that 'any person can fight the battles of just one day'. There are many in the world who fight their battles life long, and still live with some hope. It is nice to live for today and complete what is to be done today. But humans are distinguished from the rest of the living beings by hope. For other living beings, there may not be tomorrow. But hope is life for humans. Tomorrow may not come for a few. But the others are sure that there will be a day after present one. And it is hoped by many to be a little better than today. What is not realized today may be within our reach tomorrow. It is hope that make people to live through all torments of life. The moment a person loses hope, the very zeal to live is lost. Living in the past is dreaming. Living in the present is intuition connected to basic instincts. Living in hope of is humanistic rationality to look for future. Hope - Pandora brought the jar with the evils and opened it. It was the gods` gift to man, on the outside a beautiful, enticing gift, called the "lucky jar." Then all the evils, those lively, winged beings, flew out of it. Since that time, they roam around and do harm to men by day and night. One single evil had not yet slipped out of the jar. As Zeus had wished, Pandora slammed the top down and it remained inside. So now man has the lucky jar in his house forever and thinks the world of the treasure. It is at his service; he reaches for it when he fancies it. For he does not know that the jar which Pandora brought was the jar of evils, and he takes the remaining evil for the greatest worldly good - it is hope! For Zeus did not want man to throw his life away, no matter how much the other evils might torment him, but rather to go on letting himself be tormented anew. To that end, he gives man hope. "Three grand essentials to happiness in this life are something to do, something to love, and something to hope for." - Joseph Addison Hope! Hope! Hope! Delicious Hope! when naught to man is left - Of fortune destitute, of friends bereft; When even his dog deserts him, and his goat With tranquil disaffection chews his coat While yet it hangs upon his back; then thou, The star far-flaming on thine angel brow, Descendest, radiant, from the far skies To touch the deepest depths of the heart People sow seeds with hope And hope is the seed of life People through ages hoped for eternity Because hope is as great as eternity Never give-up hope, never ever Hope is your best mate, all the time Even if all desert you unexpectedly Hope will be with you, if you wish....