Apart from sin, anxiety is the soul's greatest enemy. The devil does not hesitate to fish in troubled waters....When you become aware of a growing anxiety, commend yourself to God, and make up your mind not to take any steps until your mind is calm again....Examine whether your heart is under complete control. If it has strayed, quietly lead it back to the presence of God, placing all your hopes in obedience to his holy will.

-St. Francis de Sales