According to Osho, will and surrender are two beginnings to the same end. Will is the path of doing: the doer, acts, discipline—taking will as a non-questionable hypothesis. Surrender is not an act but a recognition of will-lessness; things happen, ego dissolves, offerings 'happen' rather than are made. They differ radically at the start—'I do' versus 'it happens'—yet as one nears the goal, differences fade.
Both lead to the same place: one is you trying to do it, the other is realizing you can’t and letting life carry you.