We pass through terrible trials, on account of not understanding our own nature and take what is not merely harmless, but good, for a grave fault. This causes the sufferings felt by many people, particularly by the unlearned, who practise prayer. They complain of interior trials, become melancholy, lose their health, and even give up prayer altogether for want of recognizing that we have within ourselves as it were, an interior world. We cannot stop the revolution of the heavens as they rush with velocity upon their course, neither can we control our imagination. When this wanders we at once imagine that all the powers of the soul follow it; we think everything is lost, and that the time spent in God’s presence is wasted. Meanwhile, the soul is perhaps entirely united to Him in the innermost mansions, while the imagination is in the precincts of the castle, struggling with a thousand wild and venomous creatures and gaining merit by its warfare. Therefore we need not let ourselves be disturbed, nor give up prayer, as the devil is striving to persuade us. As a rule, all our anxieties and troubles come from misunderstanding our own nature. - From The Interior Castle, Chapter I
Guardian angel et al.