SGM Sept 2012 Question of the Month: “What’s Your Keystone Habit?” SGM Sept 2012 Question of the Month: “What’s Your Keystone Habit?” By Kevin Schoeninger | September 13, 2012 | Comments 0 Comment OOPS!? Please ensure you are logged in. Perhaps you don't have access to SGM's Back Issues? If you're a Full Member, you can learn more and purchase the "Back Issues" membership from here. Username or E-mail Password Remember Me Forgot Password