What are people finding most challenging in the COVID-world?

For me, I think it's not having a clear 'end date' or being able to advise my team on when things will be 'normal'. Obviously, no one knows this, so there is an element of uncertainty in the atmosphere pretty much consistently.

A sense of uncertainty about many aspects of life and work is one of the main things I would highlight.

The disruption of their normal habits, which makes well-being and performance more challenging.