Alexander Technique can have benefits if one puts in the effort and to some extent believes in it. FM Alexander referred to his method as "the work."

But, it takes time and a certain mindset to integrate it into daily life without becoming self-conscious. That's where it came apart for me since I overthink everything. I think others on HN may be the same. As soon as you start to doubt, it stops. Now, I am in the coffin-corner of going through the Alexander steps because they are "in my head" while getting nothing out of them.

Additionally, it is not a way to learn new things and avoid bad habits "by design." It seems to work when people (artists, musicians, dancers, etc. who are the chief customers of Alexander) have trained themselves to do certain things but who have pain from doing those things less than optimally. Reeducating themselves to do things differently may work. I tried to apply it to new movements and failed utterly.