Journalist and Vogue columnist Bella Mackie was a commissioning editor at the Guardian and a news editor at Vice before she went freelance. Her first book, Jog On – about running and mental health – was a Sunday Times bestseller and she’s recently launched her Teach Me A Lesson podcast with her husband, radio DJ Greg James. To mark the imminent publication of her first novel, How To Kill Your Family, she’s shared her reading habits, favourite authors and top book recommendations with SL…