Speaking with more authority - a management training course

How could you speak with more authority?  Here are some common ways people weaken the power of their own words: being in too much of a hurry, speaking too fast, giving too much detail, repeating themselves, not pausing to let their words sink in, filling silences, preventing interruptions, ignoring the response they’re getting.
 

You'll be experimenting with speaking with more authority, and receiving immediate feedback on how you’re coming across, on our highly acclaimed London UK management training course, “Skills with People”.
 

But how can you be sure this training in speaking with more authority is for you?