I tend to be really hard on myself and lose sleep over stupid embarrassing moments. Not talking about stuff like falling on my face in front of people in public.. that I can get over quick. But embarrassing myself in front of people I see often. For ex.. introducing myself in front of people at work and stutter/mumbling due to nervousness.. I'll end up feeling uncomfortable after that.. Need to learn how to get over situations like this and not dwell on it so much but I find it difficult.. any tips?