After launching the digital version of her book in 2018 on World Mental Health Day, Alia Bhatt's sister Shaheen Bhatt launched the paperback version of her book 'I've Never Been (Un)Happier' on December 4, 2019. In her book, the author has penned down her tryst with depression which resulted from certain incidents during her childhood. The book has a foreword by their father, filmmaker Mahesh Bhatt.

Shaheen's family including - father Mahesh Bhatt, mother Soni Razdan, sisters Pooja and Alia Bhatt attended the launch. Alia Bhatt, who is normally seen in a cheerful mood, broke down into tears while talking about Shaheen's battle with depression, saying she felt terrible as a sister for not understanding her plight. At the event in Mumbai, Alia got emotional and said that despite living with Shaheen all her life, she got to know about what her sister was going through only after reading the book.