It does faulty work, and does but little of it in the end.

Really rapid workers are always deliberate in their movements, never appearing to be in any hurry whatever; and yet they pass swiftly from task to task, doing each duty well because they are calm and unflustered, and, with their wits about them, work with clear eye, steady nerve, and skilful hand.
An eminent French surgeon used to say to his students, when they were engaged in difficult and delicate operations, in which coolness and firmness were needed, "Gentlemen, don't be in a hurry; for there's no time to lose." The people in all lines of duty who do the most work are the calmest, most unhurried people in the community.

Duties never wildly chase each other in their lives.

One task never crowds another out, nor ever compels hurried, and therefore imperfect, doing.

The calm spirit works methodically, doing one thing at a time, and doing it well; and it therefore works swiftly, though never appearing to be in haste.
We need the peace of God in our heart just as really for the doing well of the little things of our secular life as for the doing of the greatest duties of Christ's kingdom.