Today it's not so much anymore about what you know.
And instead it's all about how good you are at adapting to new situations, environments and things to do.
But it's not just about how good you are at adapting and learning new things, but even more importantly it's about your willingness to do so.
And unfotunately this willingness usually goes down the better you (think you) are at what you do or the longer you've already been doing what you're doing.
The problem is that these are the situations where you need it the most...