In a masterclass on how to build companies and products that change the world, and how to persevere through failure, Tony Fadell speaks with Divya Shekhar about his illustrious career, which, through its twists and turns, has helped him become the man behind some of the most inventive products in the world today.

The co-creator of the iPhone, who led the team that built the first iPod at Apple, Fadell's new book 'Build: An Unorthodox Guide to Making Things Worth Making' is all about how to find one's place in the world, think differently about work-life balance and solving problems, and the lessons he learnt from his mentors, including Apple Co-founder Steve Jobs and Google Co-founder Larry Page.