What physical and psychic factors are necessary for encountering the inner light in meditation, and how can one grow in them?

According to Osho, the inner light appears when three shifts ripen: become consciously frustrated with outer cravings and turn that energy inward; direct the frustration toward yourself, not others, so transformation begins; and assume total responsibility for what you are, dropping all excuses. Grow them by witnessing desire, stopping object‑switching, repeatedly returning attention within, and living alertly accountable.