Faith is the A B C of the realization of God. This faith begins by prayer.
Bowl of Saki, by Hazrat Inayat Khan
Commentary by Pir-o-Murshid Inayat Khan
Someone once said to a Brahmin, 'O ignorant man, you have worshipped this idol for years. Do you think it can ever answer you?' 'Yes,' said the Brahmin, 'even from this idol of stone the answer will come if your faith is real. But if you have no real faith, you will get no answer even from the God in heaven.' ... The first necessity is the belief that there is such a Being as God, in whom goodness, beauty, and greatness are perfect. In the beginning it will seem nothing but a belief; but in time, if kept in sincerity and faith, that belief will become like the egg of the Phoenix, out of which the magic bird is born. The birth of God is the birth of the soul. Every soul seeks for happiness, and after pursuing all the objects which for the moment seem to give happiness, it finds out that nowhere is there perfect happiness except in God.
http://wahiduddin.net/mv2/IX/IX_9.