I do, I know exactly what to say in my head but it often doesn't come out at all or if it does I think it doesn't sound right, sometimes I'm scared by my own voice, like I'm talking but don't feel like I'm talking or know where it's coming from. And also I never know what to say, like I feel people can just talk freely, with me, I'm there like what do I say I never seem to know much about the subject and just don't say anything. But I do over worry about what people will think about what I'm saying and do even feel embarrased about it.