No surprise Ardern has 'no more in tank' - psychologists

STORY: Clear boundaries, a co-operative workplace, and the ability to switch off are essential to reducing workplace stress and burnout; all things that aren’t always feasible as a prime minister said clinical psychologist Dr. Rachael Murrihy.

Murrihy said that it’s very possible that Ardern’s proximity with the incidents that plagued her time as leader, including the Christchurch shooting and the White Island volcano eruption, would have had a toll on her, despite not being a victim of these events.

Professor of psychological medicine at University of Sydney, Nicholas Glozier, said it's important to acknowledge that Ardern has a life outside of work and that personal factors would have contributed to the decision to step down.