I am obliged to point out that Johann Hari has a distinctly chequered reputation. He lost his job as a columnist at The Independent in 2011 due to multiple substantiated allegations of plagiarism; it later transpired that he had vandalised the Wikipedia articles of journalists who had criticised his conduct.

https://en.wikipedia.org/wiki/Johann_Hari#2011_scandals

His book Lost Connections has been strongly criticised for misrepresenting the mainstream scientific position, cherry-picking data and making unreferenced and unsupported claims.

https://anotherangrywoman.com/2018/01/22/thinking-critically...