I'm 31 and still stutter just as bad as I did when I was a kid. Even now I haven't fully accepted it as a part of myself, but I have grown to care less. One thing I've learned though is that people never care as much as I think they do. I will create these situations in my mind of how people view me and what they think when they hear my stutter, but I can count on one finger the amount of times that's happened in my life accurately to those thoughts. People will often be a little surprised cause of how rare of a thing it is. I mean, most people would probably live there whole life without ever meeting and listening to someone that stutters. So 99% of the time when you think they're judging you, they're merely just a little surprised. Also, you should make sure your Dad knows that speaking slower is the literal opposite solution to fixing a stutter. Speaking slower, trying to calm yourself and thinking about what your going to say is precisely what causes the stutter for most people. I've caught myself from time to time having said a sentence completely flawlessly, and the reason why has always been the same: I wasn't speaking slowly, wasn't trying to calm myself and wasn't thinking about what I was saying. Speech therapy is a great thing, but you need to go into it with the mindset that you're going to work to change yourself, don't rely on the therapist to fix it for you. I took speech therapy for almost 2 years and it didn't do anything cause I was relying on the therapist to fix my issues for me. It can be a great thing, but you need to put in just as much effort to change! As for something to help your current situation, there really isn't one that worked for everyone. Each person is a little different. For instance, I heavily gravitated towards music and singing. Singing allowed me to say everything I wanted to without being hindered by a Stutter. It also helped build my confidence with my voice. It never actually helped my stutter, but it helped how I viewed myself and those around me. Knowing that people being patient with your stutter and letting you say what your trying to say is something you should never have to apologize for, and I never have. These are lessons though that you'll learn as you grow older. Surround yourself with people that see you for you and not your stutter. It sucks, but I promise it will get easier to deal with in time.