I am a fighter and not a quitter

A quote from Liz Truss, the shortest-serving prime minister of the United Kingdom, a day before she resigned. Used to claim that you will not give up (but you will actually quit a short while later, as expected).

Alex: I’m gonna finish my English essay. After all, I am a fighter and not a quitter!
Alex, one hour and two drafts later: I am resigning.