I've come across with the below sentence:
The mistake most people make is to assume it’s stressful and exhausting—all this thinking.
I think it symply means "all this kind of thinking" but I'm not sure. So, could you please tell me what it means exactly?
The fuller text is:
Mindfulness is the process of actively noticing new things. When you do that, it puts you in the present. It makes you more sensitive to context and perspective. It’s the essence of engagement. And it’s energy-begetting, not energy-consuming. The mistake most people make is to assume it’s stressful and exhausting—all this thinking. But what’s stressful is all the mindless negative evaluations we make and the worry that we’ll fi nd problems and not be able to solve them.