Interesting how this works on the physical plane too. In Iyengar yoga, we focus quite a lot on inversions: a variation of headstand and shoulder stand is part of every class. Being upside down teaches you very quickly what’s holding you back, like weak shoulders or fear of falling. These barriers are probably showing up in other poses too, but you’re paying less attention because you’re in a more comfortable state, i.e., right side up. Being upside down is liberating because it gives you very clear feedback on where you need to work.