I highly recommend improv courses. The primary thing it helped me with was talking without having fear of saying the wrong thing or having people judge me, but

I highly recommend improv courses. The primary thing it helped me with was talking without having fear of saying the wrong thing or having people judge me, but it also taught me the importance of _how_ you say things. Even if someone didn't do the courses I would still recommend they read Impro by Keith Johnstone.