What does this quote mean “don’t let go too soon, but don't hang on too long.”

This theory of detachment also applies to Morrie's latest aphorism, "Don't let go too soon, but don't hang on too long." If Morrie is to cling to his last moments of life, desperately craving more, he will die having felt in his last minutes only frustration and dissatisfaction.

she was trying to use   reliable narrator.

she was killed in her home during hurricane katrina. b.she was relocated to another town after hurricane katrina. c.she died trying to get victims of the hurricane to safety. d.she is still missing — police do not know where she is.