Sri Aurobindo
Letters of Sri Aurobindo
03. Basic Requisites of the Path
There is no reason for your trouble other than this readiness to listen to their knock and open the door. If you desire only the Divine, there is an absolute certitude that you will reach the Divine, but all these questionings and repinings at each movement only delay and keep an impending curtain before the heart and the eyes. For at every step, when one makes an advance, the opposite forces will throw these doubts like a rope between the legs and stop one short with a stumble – it is their métier to do that.... One must say, “Since I want only the Divine, my success 
is sure, I have only to walk forward in all confidence and His own Hand will be there secretly leading me to Him by His own way and at His own time.” That is what you must keep as your constant mantra. Anything else one may doubt but that he who desires only the Divine shall reach the Divine is a certitude and more certain than two and two make four. That is the faith every sadhak must have at the bottom of his heart, supporting him through every stumble and blow and ordeal. It is only false ideas still casting their shadows on your mind that prevent you from having it. Push them aside and the back of the difficulty will be broken.