Do nothing, and leave nothing undone. ["Doing nothing" is what happens when the doer disappears, it isn't something that one does or chooses not to do.]
With that gentleness I can be bold; with that economy I can be liberal; shrinking from taking precedence of others, I can become a vessel of the highest honour.
The mystical techniques for achieving immortality are revealed only to those who have dissolved all ties to the gross worldly realm of duality, conflict, and dogma. As long as your shallow worldly ambitions exist, the door will not open.
Going back to the origin is called peace; it means reversion to destiny. Reversion to destiny is called eternity. Those who know eternity are called enlightened.
The transformation toward eternal life is gradual. The heavy gross energy of body, mind, and spirit must first be purified and uplifted. When the energy ascends... then self mastery can be sought.
Having reached a high level of realization (or having accomplished anything in life), don't get excited or puffed up with pride but remain calm, humble, and in "perfect equanimity" if you want to continue in this deep state of consciousness.
To be constantly without desire is the way to have a vision of the mystery of heaven and earth. For constantly to have desire is the means by which their limitations are seen.