Acting is at once the most exhilarating and most terrifying of experiences. In truly committing to a role, you throw yourself off the cliff, with zero idea what lies at the bottom. Actors have got to be some sort of masochists - trying to be what you are not, in situations you may not be comfortable with, trying to get into a mindset that may be entirely alien, having no idea if you will look brilliant or totally foolish... It's challenging, frustrating... and I have learned more about myself by doing it than probably anything else in my life. I whole-heartedly recommend you try it.