Answer:
Music. Find lofi or instrumentals or beats of your favorite songs. Some say music makes your focus bad, but it provides an incentive and helps me slip into the zone. As long as it isn't heavy rock or energetic pop, just some calming music without lyrics, it helps you relax and focus.
If you could give me your insta I might be able to help more by basing it off your interests. Feel free not to though.
The correct answer is 3) The narrator has been insulted many times and vows revenge against Fortunato.
At one point in time when he felt that he had been insulted, the narrator decided that enough was enough and that he would have his revenge.