Tony - your post reminded me of one of my favorite quotes from Yogi Berra. My GF says this all the time but its soooo true -
In theory, theory and practice are the same. In practice, they are quite different.
- Yogi Berra
I would add that what we think we practice and what we actually practice are quite different - but the only way to know, is to observe ourselves in the act of practicing it. That's where the GoPro comes in!!