That’s very interesting that those 2 things work for you bc they usually do the opposite! The DSM categorizes blocking-dysfluency as similar to PTSD and social anxiety, and if someone has a highly imbedded sense of fear, positive affirmations can actually backfire. Also, There’s a lot of research that using inhaling to reduce blocks is actually harmful. Here’s just one source https://stutteringtherapyresources.com/blogs/blog/its-almost-never-breathing