We make decisions based on our level of confidence.
In the realm of fast food, I will always choose either In-N-Out or Taco Bell because I am confident in their superior offerings, e.g. double doubles and quesaritos.
I will choose to vote for you based on my confidence in your ability to act in accordance with the Constitution.
I will buy from you based on my confidence that you will help me solve a problem.
However, something we often forget is that OUR confidence is largely impacted by the confidence level of the person we interact with.
When someone is very confident it makes us more confident. Analogously, any time you are speaking to others your confidence sends an undeniable signal.
Are you sending signals of confidence or hesitation?