In "Doctrinal Discussion" William Sillings writes:

Trouble comes to all Christians — sometimes through lack of foresight, sometimes through lack of perfect control over circumstances, and sometimes through the providence of God who allows Satan to test us. None are exempt from it, but neither do any have to fall prey to it. Trouble can be conquered — through better planning and exercising greater care, through trust in God, through changing one's mindset to perceive God in life rather than always perceiving trouble. Basically, trouble can be transformed into opportunity if we fully acknowledge that we do not have the power to control everything, but that God does.

Source: Studies in the Psalms: Adult Teacher's Insights, page 62.