1) The author recounts how she used to bite her nails as a habit until high school when she noticed how ugly it made her fingers look. 2) To break the habit, she came up with a strategic plan to focus her nail biting on just her pinky finger and let the rest grow out. This helped her slowly wean herself off the habit. 3) Breaking this habit was an important moment of self-discovery for the author where she realized her own strength and determination, and from then on saw herself as someone who could achieve what they set their mind to.