If you truly want to do what you say you want to do get the fuck over yourself, get over this list of crap you have put in between you and a piece of paper, and just start writing.
There are millions of people in the world who are experts, certified PhD level experts, at setting themselves up to fail. if that’s who you want to be, that is absolutely fine. but you have to stop talking about it and be who you are.
But if you’re telling me that you have a voice, there is no one in the world other than you who is going to be able to make that voice heard. No one’s going to come over your house and sprinkle magic dust on you to make you the writer you want to be. You have to sit down and start writing.
Stop excusing yourself from living the life you want to live.