According to Osho, during darshan the shock of a master's loving presence dissolves your lifelong conditioning of unworthiness and the urge to become someone else. Faced with a being who is simply himself, your imitation and striving drop. When becoming stops and your uniqueness is accepted, the mind's noise subsides—leaving a natural, profound silence.
Meeting a true master makes you feel okay just being you, so your mind stops trying and you feel very quiet inside.