According to Osho, in the living presence of a master your 'person' (the bundle of ego, misery, anxieties, and despair) begins to melt. You cannot keep both the master's presence and your person; one must be dropped. Letting the person dissolve brings a drugless serenity and joy, an effortless release from your inner hell.
Being near a true master is like warm sunlight that melts the icy, painful ego, so peace appears by itself, but you cannot keep both the sun and the ice.