This is my childhood. You seem to have had it worse than I did though. Can I ask how old you are? I stuttered badly (still do, but to a much less degree) from as soon as I could talk to when I was about 18 or 19. It was a change of environment, finishing high school, leaving a home with an emotionally abusive step-father and speech therapy as an adult. Also, my father stuttered, but not as bad as I did. Different strategies work for different people. If a change of environment is possible, then try or wait until such an opportunity appears and bide your time. If you haven't tried speech therapy, try it. If you have and it didn't work, try someone else (if finances allow. I'm Australian, so it was free). Just having someone to talk to who is trying to help and/or won't judge you will do you wonders. If your stutter is possibly caused by trauma, address it. I think mine was exasperated by trauma, my half brother's father when I was three told me he wasn't my dad when I called him that, it's still a memory that comes back every now and then and I think it may be a (definitely not the only one) cause of the severity of my stutter as a child. If it's genetic, then honestly I have no real advice here, I'm not sure there's much one can do about it. If it's all of the above and more, then bide your time, slowly work on it, with work, it can get better.