The most important surrender is the surrender of your character, your way of being, so that it may change. If you do not surrender your very own nature, never will this nature change. It is this that is most important, You have certain ways of understanding, certain ways of reacting, certain ways of feeling, almost certain ways of progressing, and above all, a special way of looking at life and expecting from it certain things- well, it is this you must surrender. That is, if you truly want to receive the divine Light and transform yourself, it is your whole way of being you must offer- offer by opening it, making it as receptive as possible so that the divine Consciousness which sees how you ought to be, may act directly and change all these movements into movements more true, more in keeping with your real truth. This is infinitely more important than surrendering what one does.
Ref : Questions and Answers 1950-1951