According to Osho, "being a mere instrument" (nimitta-matra) and "being spontaneous" are two vocabularies for the same realization: drop the egoic doer, become a hollow flute, and let the Divine—your own deepest nature—flow. Instrumentality flowers as spontaneity, and true spontaneity reveals instrumentality. Surrender is not slavery but freedom; paths may differ by temperament, yet at depth the goal is one.
Stop trying to control everything; when you let go of the ego, life moves through you naturally and wisely.