Methods and words that are used to persuade and influence people are important to identify. 
These things are as important as modes of speech and body language.

Clients will choose you because they trust you, like you, have confidence in you, and think that you can get the job done. Most important, they believe you have their best interests at heart....   

Helpful Link:

Standford Report on 'The power of language: How words shape people, Culture."

https://news.stanford.edu/stories/2019/08/the-power-of-language-how-words-shape-people-culture