According to Osho, surrender is attained not by effort but by insight: see that the ego's separate center is false and that existence has one center beyond 'me'. Place your center in the Whole (call it God, Buddha, life) and live as a means to That end. Trust the total movement, relinquish personal doership, and align with the interconnected flow; then surrender flowers naturally.
Realize you are not the boss of life; trust the bigger whole and let it lead.