Having more credibility - a management training course

How could you have more credibility?  By communicating not your opinions and judgements but the feelings behind them.  It means translating statements like, “I don’t think we should do x”, into emotionally communicative statements like, “I’m extremely worried about the risk of doing x”.  This carries more weight and will usually be taken more seriously.

This is how, in practical terms, we define speaking assertively.  You'll have more credibility if you learn to speak assertively.  You can learn and practise it on our highly acclaimed London UK management training course, “Skills with People”.

But how can you be sure this training in having more credibility is for you?