The following quote is something that I need to be reminded of regularly (as I am "in my head" too much) and applies not only to yoga, but to anyone who seeks God or walks the spiritual path.
"The young, the old, the extremely aged, even the sick and the infirm obtain perfection in Yoga by constant practice (Yoga=union with God, not just physical postures). Success will follow him who practices, not him who practices not. Success in Yoga is not obtained by the mere theoretical reading of sacred texts. Success is not obtained by wearing the dress of a yogi or a sanyasi (a recluse), nor by talking about it. Constant practice alone is the secret of success. "
While typing this out, I wondered what the text would look like with a more universal application and came up with this:
"The young, the old, the extremely aged, even the sick and the infirm find union and connection with God through practice and action. Only the one who acts in accordance with one's beliefs finds this union and truly knows God. We do not find this union simply by talking or by reading our sacred book(s). It is not obtained by saying the right things or by charading. Only the one who "lives it" has truly found what she/he is seeking."