From Thomas Merton’s Seeds of Contemplation:
The requirements of a work to be done can be understood as the will of God. If I am supposed to hoe a garden or make a table, then I will be obeying God if I am true to the task I am performing. To do the work carefully and well, with love and respect for the nature of my task and with due attention to its purpose, is to unite myself to God’s will in my work. In this way I become His instrument. He works through me. When I act as His instrument, my labour cannot become an obstacle to contemplation, even though it may temporarily so occupy my mind that I cannot engage in it while I am actually doing my job. Yet my work itself will purify and pacify my mind and dispose me for contemplation.
Unnatural, frantic, anxious work, work done under pressure of greed or fear or any other inordinate passion, cannot properly speaking be dedicated to God, because God never wills such work directly.
He may permit that through no fault of our own we may have to work madly and distractedly, due to our sins, and to the sins of the society in which we live. In that case we must tolerate it and make the best of what we cannot avoid. But let us not be blind to the distinction between sound, healthy work and unnatural toil.