"The more you are able to work in a spirit of detachment, the closer you come to working for God rather than for yourself, the less strain there is on your nerves. You do not worry about things so much, and therefore you do not get too confused, so mixed up, so tired.
In fact, you learn to recognize that your self-love, your pride, is trying to take over your work by your reactions. When you are exhausted and upset and haunted by work that seems to be going badly, it means you are working for yourself, and are taking the consequences.
But when you are free you work with an ease that amazes you. Half of the time, without any necessity for special thought on your part, God seems to remove obstacles and do half the work for you. When God wants a thing done, the speed with which it achieves completion and success almost takes your breath away."