100%. So much of a stutter is in your head, over thinking, avoidance (anxiety), ego, being hyper aware to it etc. Its that internal dialogue you have with yourself, putting yourself down and worrying about how you will be perceived. Over time it can fuel periods of depression, low self worth, low confidence etc etc. I have a stutter and im finding by talking about it with other people (not just people who stutter) is incredibly helpful, im finding that most people either don't notice my stammer or don't really care, it doesn't define who I am in their eyes. I find practicing mindfulness or meditation is very helpful, calming the mind, and not getting so caught up or lost in your thoughts, see them as separate from you. Therapy can also be extremely helpful and nurturing. I can definitely relate to feeling crazy and it being all consuming. I sometimes wonder how much of myself would be left if I didn't give so much of my thinking and energy to my stammer. I am beginning to view my stammer as a gremlin of sorts, a separate entity who I challenge and disregard when it presents itself. I find its helping a bit, you might develop something similar for yourself. What are you currently doing to challenge your stammer?