Voluntary stuttering is soooo hard. It’s so hard to deliberately change how you speak. It’s just as hard as using a certain speech technique. When I was trying it I always got really self-conscious and had this paranoid feeling like people could tell I was faking it. I think it’s a valuable thing, but you have to really commit to it. Seems like nurturing overall stuttering acceptance would have the same benefit (I.e., reducing nervous reactions which would eventually reduce actual stuttering ).