I think this is particularly applying to people who are stuck in life. People who tend to be stuck here may be fearing the first step to break out into the unknown and out of their comfort zone (i.e. getting over social anxiety in order to meet new people and network, moving to a new area to be open to more job offers, etc.). Some people's comfort zone can be more detrimental than others, and it could parallel the mindset of having a security blanket all the way to having an addictive behavior that's been keeping them stuck. Letting go of that security blanket or those coping mechanisms can be very difficult and anxiety inducing for a lot of people.