Johann Arndt

It certainly is the duty of every true Christian, to esteem himself a stranger and pilgrim in this world; and as bound to use earthly blessings, not as means of satisfying lust or gratifying wantonness, but of supplying his absolute wants and necessities.

In short, all things that please the natural man in this world, are, to a true Christian, only so many crosses and temptations, allurements of sin and snares of death, that continually exercise his virtue.

People have this idea that the more pious and devout I am, the more successful I am. Which is very dangerous. If you look at faith in that way, you're bound to fail at both - spiritually and in your career.