I experience what I can only describe as 'memory echoes, where I get a strong feeling of 'didn't I do this before?' when recalling a memory. Most often the next day. For example I'll do something completely new, for the first time ever. At the time I know that I've not done it before. However, the next day, when remembering the previous day, I'll be convinced that I've actually done that thing many times before.
I can kind of stop this happening by thinking very 'loudly' to myself 'this is NEW', but even then I sometimes get confused and wonder if maybe I've just forgotten the previous experiences, because the feeling similar to Déjà vu, that I've 'been there, done that', is very strong.
While this condition doesn't really affect me adversely, I'm curious to learn what might be the cause. I'd, therefore, be grateful for any insights.