Dear chaudanga sir!
The greatest example is the fountain who teaches a lesson always try to go towards up . You go up or down, never give up mind for success
The Other example is the story of a spider and the king who fails to win but seeing the spiders trivalent there he will be successful if he try again and again.
It is Naat necessary that you can service your country by doing job but you can better service by helping poor your family as well as involving in good deeds