This made me laugh.... because it is sooo true !
"One of my first yoga teachers, David Life, told a great story about taking a private lesson with the late, great Sri K. Pattabhi Jois. He described it as 3 hours of sweating, body-twisting, ego-driven effort to impress his teacher with his abilities, which left him collapsed in a puddle on the floor. Pattabhi Jois simply looked down at his sweaty, exhausted student and said, “You’re doing it wrong.”

I got this quote from a yoga blog : http://www.sarahcourtyoga.com.html/
She is a Jivamukti yoga teacher in California and she writes a great blog !