I didn't get professional help and I kind of resent my parents for it. The were acting out of laziness not my best interest. My stutter went practically completely away towards the end of primary school then came back hard when I went to high school. I sort professional help when I was in my twenties but didn't find it particularly affective by then. The best thing that helped me is to just accept it as part of me and work on things that affect my stutter like anxiety and sleep deprivation. I wonder if it would have been different had I had a different environment and professional help as a child though.