It is not enough that one surrenders oneself. Surrender is to give oneself up to the original cause of one's being. Do not delude yourself by imagining such a source to be some God outside you. One's source is within oneself. Give yourself up to it.
Source: In The Ultimate Success Quotations Library, 1997.
-- Ramana Maharshi, (Dec 30 1879-1950), Indian Hindu philosopher; He was known for teaching method of intellectual penetration, using cave of the heart to attain self-knowledge.