For all the workaholics I know:
If you put your nose to the grindstone rough
And keep it down there long enough,
You’ll soon forget there are such things
As brooks that babble and birds that sing.
In time three things will your world compose:
Just you and the stone and your poor old nose.
We are not sent into this world to do anything into which we cannot put our whole hearts. We have certain things to do for our bread, and that is to be done strenuously; other work to do for our delight, and that is to be done heartily; neither is to be done by halves or shifts, but with a will, and what is not worth this effort is not to be done at all.