The difference between a level 1 INFJ and a level 9 INFJ is thin, and one can easily tip over to the other.
My Eight Secrets About the INFJ Personality Type.
ENFP: Always was an outsider and did things their own way. Didn’t relate to anyone around. Have an INFJ shadow – strive towards a vision or bigger idea and seek a sense of purpose in their life and actions. Less extroverted ENFPs can have a really hard time telling the difference.