1: Mandy walked into the counselling center at Mississippi State University. She was 24 years old. For as long as she could remember, she had bitten her nails.
“Lots of people bite their nails,” Charles Duhigg writes in The Power of Habit. “For chronic nail biters, however, it’s a problem of a different scale. Mandy would often bite until her nails pulled away from the skin underneath. Her fingertips … continue reading