How (not) to lose trust before you open your mouth

You're going to have an important meeting and want to make a good impression. When you're nervous, however, you can make unnecessary mistakes that could quickly hurt your image in other people's eyes. People only need one second to decide whether you're trustworthy or not.

Imagine that you attend a meeting in an expensive restaurant. Instead of welcoming you, your untidy business partner texts on his mobile phone. When he finally starts speaking, you can't understand him because he's chewing gum.

You certainly don't want to make this kind of impression. What should you be aware of?