These 9 Practices for Success in Meditation comes from Patanjali Maharishi's Raja Yoga Sutras.  In this text, Patanjali outlines, 9 obstacles to our practice.  If we can overcome these 9 obstacles then we can have success in our meditation.  The following obstacles are: Disease, Mental torpor, Doubt, Indifference, Laziness, Craving for pleasure, Delusion, Inability to practice due to lack of concentration, Restlessness of mind due to distractions.