"find the way in all things, to master one thing is to master all" this saying has been the driving force behind my training and for the life of me I can't find the exact text that I got it from.
This is another article I found which I thought was interesting and relevant. It is by Paul M. Jerard Jr.
At first glance, Martial Arts and Yoga seem like opposing forces and philosophies, but these two health maintenance systems have more in common than meets the eye. For a moment, consider the similarities between Tai Chi and Hatha Yoga. Within the warm up, you notice very similar movement, philosophy, and principles.