The term 'manage (for oneself)' can be summarized by the four-letter word 'FEND'. To FEND means to protect oneself from harm or danger, usually through physical or mental effort. It is often used in the context of self-defense or self-preservation. Fending off an attack or a threat requires a person to be aware of their surroundings and to take action to protect themselves. In this sense, managing oneself is a form of self-defense, as it involves taking steps to ensure one's safety and well-being.