Thank you so much, Marie, for your wonderful response. About being in a place where you can't lie down, there's another posture called ardha siddhasana (Lotus posture). Have you heard of it?

There's a variation I use whenever I get anxious or when I'm working and I want to focus intensely. No matter where I'm sitting, I fold my left leg, bringing my left heel to the perineum. That usually makes me balanced immediately.

Here is a Sadhguru video exploring the power of that posture.

https://www.youtube.com/watch?v=Iw7qe6nNNv8&t=11s

PS: Now that you asked this beautiful question, I feel like editing this story to cater to your question.