United Kingdom, Feb. 19 -- Hailey Bieber has found fame to be "mentally exhausting".

The 29-year-old model - who is married to pop star Justin Bieber - admits that it's easy to lose a sense of perspective when you're in the spotlight.

Speaking on the Therapuss with Jake Shane podcast, Hailey shared: "'What the f*** did I ever do to you?' It's that times a million of people. Then you get caught up in a cycle of constantly trying to prove yourself."

Hailey has actually given up trying to justify what she does and how she behaves to other people.

She said: "I think it's so easy to misunderstand people and pick things apart, see a tiny sliver of such a bigger picture. I've realised there's no amount of explaining yourself.

"It really doe...