Amishi Jha: How to tame your wandering mind

Amishi Jha studies how we pay attention: the process by which our brain decides what's important out of the constant stream of information it receives. Both external distractions (like stress) and internal ones (like mind-wandering) diminish our attention's power, Jha says — but some simple techniques can boost it. "Pay attention to your attention," Jha says.