Having to initiate a conversation with someone I don't know/know very well. I'm okay going along with small talk, but I can't approach people very well at all, especially in groups.
I also can act strange if caught off guard. I can't always collect myself when surprised.
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"I've been really, really anti-social for the past few years, and I'm just starting to get over it, and come out of my shell, and be able to like people again" - D'Arcy Wretzky