Hi! Firstly, thank you for taking the time to share your story. I know your post emphasises not to focus on fluency, however, I must admit I am curious as to how you stopped blocking and stuttering? While fluency may be meaningless in a social sense, I believe it can still make other aspects of life a little easier so any advice would be appreciated. In terms of how to be more social, I recommend starting by making an active effort in introducing yourself to people in your class (this is how I personally have made most of my friends). Additionally, take advantage of group projects and activities, university clubs that interest you (whether that be sport, educational, cultural etc) and strike up conversations there.