What does Sri Yogananda mean when he suggests to live more in spine and have attention centered on third eye? Is it to try to feel energy there?
That is a small question with a large answer! Yes, we do want to feel the energy in the spine and at the spiritual eye. To make the most of it, however, we need to do much more than feel it: we need to center our awareness there, and apply that centered awareness in all our activities.
Here is an article that I wrote on the subject. I think you’ll find it very helpful. And if you are familiar w
ith the practice of Hatha Yoga, here is a longer article that gives a few asana-oriented exercises to cultivate living in the spine.