In 'The Foe Within' Sona, 20, wrestles through her obsessive-compulsive disorder of imaging herself as a champion lawn tennis player, like Helena, the World Champion, even if she had never won beyond club level. Experts said she didn't have a champion within her. Her friends, Naresh and Iqbal, made her realize that her alter ego had imprisoned her, and, then, she fought through her disorder, pursued her second best passion, and emerged a bestselling novelist.