A：Do you have any specific ways in which you think time at school could be improved?

B：Yes, I think there could be a lot more encouragement in doing things for their own sake, for getting the satisfaction out of them, rather than this “rat race” that everybody's forced into. I think a lot more should be done to encourage people to get the value out of it.

in doing things for their own sake在句中分别充当什么成分，表示什么意思？