I just finished reading C.S. Lewis's book The Weight of Glory the other night. While I was reading I wrote down a few passages that jumped out at me. Here are a couple from the end of the book.
All our merely natural activities will be accepted, if they are offered to God, even the humblest: and all of them, even the noblest, will be sinful if they are not.
A more Christian attitude, which can be attained at any age, is that of leaving futurity in God's hands. We may as well, for God will certainly retain it whether we leave it to Him or not. Never, in peace or war commit your happiness to the future. Happy work is best done by the man who takes his long-term plans somewhat lightly and works from moment to moment "as to the Lord."