I've been on a leadership trainging course for the past fews of days. It was very intense, 8am in the morning to 9pm at night, plus homework. Plus Homwork! at 9pm on Thursday evening I was told that I had to give a 20 minute presentation at 8am the next morning.

I think half the point of the program was to place me under stress, and ensure I delt with it professionally as opposed to blowing up. To paraphrase the instructor, everyone knows how to speak clearly, to validate, to give and ask for freedback and to deal with agressive people. But, unless you actually practice, you won't do it well.