Here’s a video from a news interview in the States explaining the Alexander Technique. Karen Krueger was a senior lawyer for 25 years who had to stop work for a while due to the terrible pain in her neck and shoulders. She had Alexander Technique lessons which made a huge difference and she subsequently retrained to teach it after deciding it was time for a career change.
She explains things well and one of her clients, a poker player, even started winning more as he was more in control of his body reactions. I can’t promise this but you never know……