Here's what I do when I find I am starting to beat myself up. I ask myself WHY? Why am I being so critical of myself? What is it I feel that moment and why? What is the real problem or fear? Once I can focus on the actual reason I can see how insignificant it really is. For example, there are many things I am not in control of, so why beat myself up for any of those things? Embarrassment? For what? For being human? For having emotions? For making a mistake? Who doesn't? Now I realize this all sounds so easy now at this moment and when the actual moment happens it's a different story. Just remember to begin by asking your self WHY?