Hey, I have the same problem as yours. Blocks, but not repetitions. I usually tend to think if the person I'm talking to is not one of my close friends or close family members, because they don't know me well, they can't judge me. Actually, it is how much you care what they think. In the case of talking strangers or a job interview, as they don't know you well and they are not going to be in your life after that conversation, you think, well that was it. I'm not going to see them tomorrow and think ' I'm still not comfortable with what they thought about me since the last we talked. '