FALSE. Use the first person when it reaffirms.
Assertiveness consists of expressing our ideas, convictions or concerns in a frank, clear, serene and respectful way, however, there are no agendas to attack others.
To develop a communication, it is necessary: ​​understand their benefits, know how to say "no" when appropriate, stay calm and respond to others, use simple and first-person sentences when they reaffirm. It is also essential to use appropriate body language.