Gaining and keeping the respect of our peers is such an innate desire; even those who claim they don't care what people think still desire to be acknowledged on some level. When this desire turns into a fear, it can manifest in a variety of ways that may seem contradictory depending on who the character is with and what's expected of them. Whether it exists in the workplace or the character's personal relationships, respect is hard won, and the fear of losing it can limit their personal growth and be devastating to their mindset.

Mimicking others to adhere to the group's standards
Being susceptible to peer pressure
Avoiding confrontations to keep the peace
Projecting an air of confidence
Changing personalities depending on who the character is with
Being perceived as a teacher's pet, brown-noser, or goody two-shoes
Being a high achiever
Perfectionism at work or school
Taking on other people's responsibilities
Exhibiting workaholic tendencies
Being thoughtful and considerate to the point of annoyance
Being a rule follower
Volunteering for work, projects, or responsibilities
Taking on a submissive role in relationships
The character avoiding tasks they don't believe they can do well
Pushing themselves past reasonable limits to make a good impression
Apologizing often