Just another meditators take.

I don't worry about the details.

I do not worry the least bit about posture. I can literally meditate anywhere even while doing mindless things. The mind is silent that's is really all that needs to be to call it meditation.

When I wish to go deep most times I am sitting and a bit slouched. I want to be relaxed and comfortable. I put no effort into body position, judging your body position is a thought so right away you are complicating matters unnecessarily anytime your posture moves. Due to my conformation and natural balance point my upper body ends up slightly in front of the vertical. It works so I wouldn't worry to much about the hows just the result.

I was lucky and it was easy for me to silence my ego from the start.

I did the typical "watch your thoughts" method and suddenly my mind full went quiet. It was almost like my ego didn't want to be watched. Fine with that. Works for me.

When I am trying for inner silence while having to also "do something" like weed the garden or long drives I simply play a game with myself. The listening game.

I find not thinking while actually having to do more than be still can be a tricky task.

If you instead pretend you are waiting for someone (say the universe) to speak, the ego will often right away shut up and wait patiently for the reply. Eventually I end up getting profound guidance my ego certainly would have drowned out with chatter.