Q&A: Amount of Concentration Needed for Enlightenment Share: This content requires a free member account to access. Please sign in if you're already a member. Please register for a free membership account if you haven't already. You can learn more about membership here. Posted September 19th, 2005 by John Yates in Dharma Talks, Members Only, Question & Answer, Teaching Retreat Recordings » Tagged with Concentration, jhana_insight » Comments are closed.