Answer:
His poetic form had to be able to channel what he saw as the poetry inherent in all the infinite activities of life. It's little wonder, then, that he found it necessary to invent a poetic form—free verse—that could give him the freedom to achieve those ends.
It depends on the challenge. If the challenge made them feel good, it could boost confidence, change their personality, and they might also change the ways they do things because they found one way was better than the other. If it made them feel bad, they might start to act distant, be less active