I always loved hanging around after class working on challenging things with the teacher. Eventually that grew to me loving to teach others and helping them accomplish their goals.
If I had to pick, it would be pyramid pose because it holds a true balance of opposites. The push vs the pull, flexibility vs strength, grounding down while finding length.
The most challenging pose for me has been wheel and backbends since having my daughter. Trying my best now to embrace what I can do rather then be disappointed and avoiding the pose!
"Tuesdays with Morrie" by Mitch Albom