Possible Clues:

• Philosophy getting up Jean-Paul Sartre’s nose?
• Easygoing, in slang
• Group abandoning party's medium for attaining truth
• Form of Buddhism that says enlightenment comes through meditation
• Discipline symbolized by a painted circle
• Jon Stewart's "moment of __"
• Self-realization sect
• Form of Buddhism, emphasises meditation
• Source of enlightenment
• Meditation system