As for surrender, everyone has his own first way of approach towards it; but if it is due to fear, “form” or sense of duty, then certainly that is not surrender at all; these things have nothing to do with surrender. Also, complete and total surrender is not so easy as some seem to imagine. There are always many and large reservations; even if one is not conscious of them, they are there. Complete surrender can best come by a complete love and bhakti. Bhakti on the other hand can begin without surrender, but it naturally leads, as it forms itself, to surrender.
Ref: Letters on Yoga – III