It is very confusing. I think the important thing is to remember you are not your diagnosis or diagnoses. That is part of your life experience, perhaps a big part. But still only a part. Personally, I like certainty and diagnosis isn't always that.

I try to live as best as I can. So when I recently learned of multiple diagnoses at first I was like, "what the heck?" Then I pondered it and it actually made sense.
The diagnoses have helped me understand my past more clearly.

I still have huge memory gaps, but now I know why. That helps.
But part of me hates that this is the situation at all.