I have what AA describes as a wet brain from ten years of seriously abusing alcohol. I do not get waves of nostalgia. But Deja Vu was a constant feeling for most of my life.

I believe that this is from the dissociative disorder. Always feeling like you are doing the same things over and over.

I have constant feelings of regrets. For most of my life I did not understand how socially dysfunctional I was. I did not know I was mentally ill. I did not know that my communication skills were horrible. I did not know that my logic was very badly flawed. I never had any in-depth conversations with adults, at all, during my childhood, adolescence and even as an adult. I had casual conversations with my teachers, my sergeants, professors and employers. This all relates to my Borderline Personality Disorder but it is also why I have not gotten help for my Dissociative Disorder.

I love nature. In Florida I went to State lands and hiked regularly. I wish I could have the happy memories that you describe. I wish I had loved ones and intimates.