Without personal Self-Protection in the form of self-determination, boundaries, safe guards, and risk assessments you can easily find yourself at the mercy of others. Self-Protection provides you with a security that empowers you to make more effective and appropriate choices.
For example strong financial backing means you can make more choices, including to leave a job that is soul destroying. With a strong empowering and supportive network you are protected socially, as well as health wise. Being able to distinguish a toxic person means you have a chance to protect yourself from them.
Self-Protection comes in many forms and provides you with great power, assuming you don't over do it such you start living in a self made cage.