Got this problem recent days. I can't speak or communicate, or whatever you say. Like, you started a conversation and I said yes, no, good or just a reply to your talks. But really can't open up. It's really great for me to be on my own sometimes, but now I'd really like to open up sometime and truly take part in discussions. What is that actually? It's really not like that I'm introvert. Maybe the reason is I'm thinking I'm not acceptable? Or what?