So you have a regular spiritual practice—you go to yoga three times a week, let's say, or you meditate every day. Yet the practice feels less fulfilling than it used to: You've somehow lost touch with the core teachings that define the purpose of your spiritual struggles. This is no doubt one of the reasons that svadhyaya, scriptural study, is one of yoga's main ethical precepts. The natural tendency of the human mind is to forget, and it's necessary to be reminded of where we are and where we're going.