Probably an indication of my still unstable sense of self
Well, the IFS model would say there is no such thing as an unstable core Self. The point is to unblend all the parts so that your Self can lead your life with compassion and respect for
all of your parts. From an IFS perspective, it would be that a part (probably a 'manager') is terrified of letting go of control because of past experiences. It is still in control, protecting the Self from what was once a very dangerous environment. (I'm assuming your current life is currently safe and that you're not still involved in dangerous relationships.) But the point, from an IFS prospective, is to unblend, and to stay unblended, from all your parts. The point is to recognise your parts, enter into dialogue with them, understand why they are the way they are, understand why they feel the way they do, then release them from unhelpful / constricting / trapped moments in time so that they can transform themselves into more helpful aspects of Self.
I understand your fear of things being real. I've lately started to have intimations of something I previously had no clue of, but would explain why I have no memories prior to the age of 13/14. I currently have a manager getting quite indignant with me over the parts work because she (and others) are protecting quite a big secret. The secret of my life. I am very, very, very afraid that the secret is what I am starting to suspect and that would be quite mind-blowing / devastating. But... if that is it, then I can come to terms with that and begin proper healing. And if isn't, if I am just making everything up, at least I can finally come to terms with that part of myself, understand why it might do that, and move on.
The point here is moving on. I'm very tired from lugging this all around. I do want to unburden myself and I am finding this notion of parts quite liberating as it helps me understand why I am so many things all at the same time.
I say all this, but I also think that I wouldn't do this without a (very good!) therapist because of the ramifications of the secrets (or 'exiles' in IFS language) and also because I don't want my 'firefighters' making me go off the rails again. I'm currently dominated by very meticulous and careful 'managers' who take very great pains to remove as much stress from my life as possible. But... they're also out of control! They've removed so much stress from my life that I no longer have one. LOL! I'm a terribly unbalanced mess, but I do have hope of finding my way back to my Self.
Or if it isn't real facing I am literally nuts.
PS: Not facing the issue won't make this untrue if you are actually nuts. If you're nuts, you're nuts, whether or not you accept/face that. Frankly, if you were really nuts, I don't think you'd be able to carry on such coherent conversations.