Ask the other person about themselves! I can't stress that enough. When you show you are interested in the other person's life, it engages the person because people love talking about themselves. Keep it light and casual. Talk about their jobs, families, pets, schools, and common interests you share.
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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.