One of the earlier questions in my homework was: Practicing Kriya Yoga brings what results? My answer: it decreases obstacles and brings samadhi. Well, I don't have samadhi yet, but the self imposed suffering from the obstacle has certainly decreased. Kriya yoga in this instance means the yoga of action (not the spiritual technique given through initiation). By the action (kriya yoga) of chanting this invocation to the great sage Patanjali, the waves of my mind were stilled (Chitta Vritti Nirodhah). Yes, there are many different ways to practice yoga and it is moving and proving itself in my life the more I study and practice. This reminds me of when I was a little girl, my mom gave me a bible and in it she wrote "Study to show thyself approved" (2 Timothy 2:15). Though she didn't know it at the time, I would certainly follow that path, in yoga it is called svadhyaya (self study).
This is yoga off the mat!