Let him feel even in the very heat of this world's activity that his Guardian Angel is ever with him, that it is not farther away than his own inmost heart. Let him nurture this unshakeable faith, for it is true. Let him make it the basis of all his conduct, try to ennoble and purify his character incessantly, and turn every failing into a stepping-stone for a further rise. The quest winds through ups and downs, so he must make despair a short-lived thing and hope an unkillable one. Success will not depend on his own personal endeavours alone, although they are indispensable; it is also a matter of Grace and this he can get by unremitting prayer, addressed to whatever higher power he believes in most, and by the compassion of his guide.
-- Notebooks Category 18: The Reverential Life > Chapter 5: Grace > # 173