i don't think this is a silly fear at all ! its real to you, so how can it be ? we all have inhibitions, i know i do, i couldn't 'role play' in a training course, my husband gets tongue tied on the phone, we all have little fears or anxieties about certain things, thats what makes us individuals. if you feel like you're missing out because of these things, then maybe with the programme you could work towards some small goal / achievement, but if its just not your 'thing' don't make yourself, or beat yourself up about it, i'm sure your friends love you for who you are, not what you can or can't do. good luck !!