Hi Mitch,
In your post you mention that you're working on your posture. So am I for my several back issues: osteoporosis, multilevel degenerative changes, disc herniations loss of disc height, central canal stenosis, foraminal narrowing and nerve compression.

This book was recommended and I am finding it very helpful: Back Mechanic, The secrets to a healthy spine your doctor isn't telling you. The author is Stuart McGill Phd. You can also find him on YouTube. I'm taking classes with a McGill trained and certified practitioner. Progress is slow but worthwhile.

All the best,

Diana