What should be someone's attitude against any failure of life?
How do you stay disciplined on studying while you know that you're not chosen for a championship?
Dear, don't you know the proverb, "Failure is the pillar of success"? Just uphold your determination, and also be optimistic about your next time opportunity. The person having the attitude of pessimism generates nothing except shame to others. Nature always shows respect to those who bear courage against doing any adverse assignment or most usual activities. Just think, a ship has fallen under an incredibly threatening storm. What attitude of the commander or captain of that ship would get the highest appreciation or expected? The answer is certainly as, "The commander or captain should have the capability to pull the ship in an incredibly efficient fashion and rescue the ship, and also the lives of the others of that ship". So, eradicate your mental agony or frustration. In the meantime, concentrate on your study as there is another proverb, and that is, "Time and tide wait for none". Once the time is elapsed in a meaningless or unutilized fashion, it will never get back to you. Your opportunity of doing anything constructive would be lost forever. So, think deeply about what I've mentioned so far, and that of course for your welfare.