India, March 6 -- Supriya Joshi, 39, stand-up comic

By age 30, you should realise that no one cares about you as much as you do. Most 20-somethings are obsessed with becoming what the world expects them to be. They shrink themselves because "What will they think?" As I grew up, I realised that I was the only one who cared about this. So, if being cringe is authentic to you, be cringe.

Akshay Tyagi, 39, celebrity stylist

Turning 30 is a good marker to start checking your assumptions about people, and to not believe you know what anyone is going through, just from how polished or put-together they seem. People carry private battles, invisible responsibilities that rarely reach the surface. Your own lens on life is shaped by access, oppor...