There is a time for rest and there is a time for work.

When we work we should work entirely.
When we rest we should rest entirely.
If we try to mix rest and work, we do neither well.

That is true.

But if we work restfully, we work then with the greatest amount of power and the least amount of effort.
That means more work and work better done after the right habit is established than we did before, when the wrong habit was established.
The difficulty comes, and the danger of "getting fired," when we are changing our habit.
To obviate that difficulty, we must be content to change our habit more slowly.

Suppose we come home Saturday night all tired out; go to bed and go to sleep, and wake Sunday almost more tired than when we went to bed.