You're right when you say that there is no cure for you. That doesn't mean that you don't have options or hope, though. You do.
I know what you mean about not feeling "real." I get the same exact thing sometimes; that feeling that you are just observing your mind and body as an outsider, like it's a movie or a dream. This usually happens when I start obsessing about my thoughts, getting anxious about losing control of my mind. It's a normal reaction most people have only when they face extreme danger or stress; but for people who suffer from extreme anxiety, your brain and body react as though you are facing extreme danger and stress even when you aren't, simply because you sincerely believe that you are. It's frightening and disorienting, but it does NOT mean that you are losing your mind, even though you may sincerely feel like you are. It just means that your mind is getting hung up on these circuits and responding the way brains and bodies are supposed to respond to perceived threats. It is most disconcerting to me when this happens while driving, because I fear that I will lose control of the vehicle. I sometimes need to pull over to the side to get a grip. It's very disorienting, but not directly harmful.
There are ways to help you break these circuits and even reroute them, but they take time and practice, and different methods work better for different people, so there is not a single method that will cure you. But I can guarantee you that it can get better if you're patient with yourself and keep working on it. I sometimes feel like I take one step forward and two steps backward, but I still have faith that I can eventually get it under control to at least make it tolerable. I have good days and bad days. Knowing that I have a lot to look forward to in life helps pull me through the bad days... sometimes just barely, it seems. It takes a lot of patience.
In the meantime, it's helpful to me to know that there are a lot of other people out there who have been through the same thing, and others who are going through it still, and they are proof that it doesn't mean that you are losing your mind or dying or suffering from some rare unknown condition.