Well it means the actions and good deeds that people do give meaning to life and help the person and their name live on. I’d go into a story with the thought that the main character lives a long life because of the good deeds (could think of outstanding and kind actions) he or she did and not just because they live to 70 years.
I can improve my school community by helping out more. I can stay after class to tidy up classrooms. Help students who need the extra help. I can sharpen pencils after class. I can donate extra school supplies for the kids that don’t have.