Bad may not be bad, it may be good; good may not be good, it may be bad.
"Every adversity, every failure, every handicap, every physical ailment, every unpleasant circumstance and experience carries with it the seed of an equivalent benefit, often in some hidden form"
An old man once lost a horse. His neighbours all came to console him. But the old man said, "It may turn out to be a good thing." A few months later, the horse came back by itself and brought another fast horse with it. The old man's neighbours this time came to congratulate him. But he said, "This may turn out to be bad."
One day, the old man's son went out riding on the fast horse. the horse ran too fast, and his son fell down and broke his leg, became crippled and handicapped. [So, what do you think, is it a bad thing?] years later, the country was at war with its neighbours. All abled bodied youths were drafted to become soldiers. Many of the youths died in that war except the old man's son. [so, what do you think, is it a good thing?]
Every failure is a lesson that drives a person to try a new approach never tried before.