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
Answer: can you explain more?
Explanation:
I assume Roosevelt wanted the instructions to be straightforward and simple as possible so that the instructions could be easily understood and help you perform the correct actions.