Bhakthi (Devotion) and Shraddha (sincerity) are the two oars with which you can take the boat across the sea of Samsara (worldly life). A child told its mother when it went to bed at night, "Mother, wake me up when I get hungry." The mother answered, "There is no need for me to wake you up, your hunger will itself wake you." So too, when you are hungry for God, that hunger will activate you and make you seek the food you need. God has endowed you with hunger and He supplies the food too. He has endowed you with illness and He gives the specifics you need too. Your duty is to see that you use the appropriate food or drug!
-Divine Discourse, Mahashivarathri, 1955.