I do this constantly...and I think many people to it to some degree. I feel it improves my confidence in that I'm able to prepare for situations. Before I go see a friend or attend a social event, I always plan in advance what to say to them, what to talk about, mention, etc. It's pretty rare that I enter a social situation without thinking about it first. That's why I like planned events, especially when I know who's coming; if I know the types of people who will be there, I can adjust your conversations accordingly.
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Given a “tentative” diagnosis as a child as I needed services at school for what was later correctly discovered to be a major anxiety disorder.
This misdiagnosis caused me significant stress, which lessened upon finding out the truth about myself from my current and past long-term therapists - that I am an anxious and highly sensitive person but do not have an autism spectrum disorder.
My diagnoses - social anxiety disorder and obsessive-compulsive disorder.
I’m no longer involved with the ASD world.