The book is Strong Female Character by Fern Brady. There have been several occasions in the past year where friends have asked me if I was autistic and my answer was typically, "probably not." I knew I shared certain traits with autistic friends but I thought it had to do with my anxiety problems.
This similar loop for me also led to something I had been overlooking; interacting with "my people" was more than just relaxing a mask, I was missing how restorative it was to interact with them.
I know I blurt things out and interrupt and have built procedures to moderate that. Then when I see a specific sibling and we both get so excited we are almost shouting, interrupting one another, and finishing each-others sentences it feels good to be able to live life for that moment in my "natural state".