Melbourne teenager Grace Halphen had a tough time transitioning to high school - she struggled to make friends and fit in. When she realised this was a common experience, she wondered why she'd felt so alone. When she was 13, Grace embarked on a project to contact all the public figures she admires, and asked them to provide advice to help teenagers navigate the inevitable ups and downs of adolescence.

In LETTER TO MY TEENAGE SELF, 50 prominent Australians write heartfelt letters to their younger selves, passing on the wisdom they wish they'd had at the time. From learning to laugh at yourself (Adam Gilchrist), realising that the qualities that make you stand out are the ones that makes you SO RAD (Missy Higgins), not letting the negative things that happen shape who you become (Guy Sebastian), practising gratitude (Nathan Buckley), and the reassurance that you'll get over anger about people treating you badly because you'll get better at treating yourself well (Judith Lucy), LETTER TO MY TEENAGE SELF provides inspiration and reassurance for parents and teenagers alike.