Can We Train Ourselves to Worry Less About Others’ Opinions?

I came across a study years ago which found that fear of negative evaluation was one of the key drivers of performance anxiety in musicians. Which of course makes perfect sense, as we're being evaluated all the time. Often, with meaningful consequences attached.But that doesn't mean it's helpful - or very pleasant to experience either! So is there anything we can do to be less sensitive to what others around us might be thinking about us? At least in rehearsals, auditions, performances, or ev...