Living in the past in the current time frame
The truth is I myself indulge in a lot of fantasy in a way that I refuse to acknowledge my age at least to myself and in my mind I'm still in the 80s when I had my fondest memories as a person. That isn't to say when I meet people I tell them I'm 8 years old but only that I am blocking out the stress of being an adult and having to work for a living, worry about consequences of later life and where I'm going to get enough money for retirement. Mind you I'm not in this perpetual state of denial but I choose to insulate myself from it more times than I care to admit. What I do is put on 80s music and just forget about the world beyond the here and now.
I'm not going to bother asking if this is normal, at this point I have acknowledged it doesn't fit the mould of what is conventional standards of normal but at the same time it isn't hurting anyone. I didn't wake up one morning and convinced myself I'm no longer a 50!something man with a wife and kid but an 8 year old girl. I still lead a productive life l, go to work, pay my taxes, ect. But when it's me time I really relish it and enjoy being in this self induced delirium.
Btw I'm not a 50!something man with a kid. I was referencing that man who made the news and decided he was a little girl and abandoned his family.