How do you spot a person who is acting tough but has no real street experience?

How do you cope with the challenges of temper tantrums and self-isolation in an autistic family member?
How can you support a partner who seems perfect for you but constantly doubts their worth in the relationship?
Would you want coworkers to keep checking on you after you returned to work with an injury?
What's the difference between having a personal belief and actively trying to convert others to that belief?