The recommendation not to praise intelligence but work is a good one. I remember hearing about some other research awhile back that found that kids who were told about how smart certain scientists (like Newton or Einstein) were then did worse in science in math classes compared to those that were told how hard those same people worked. I can say for my own part that this makes sense. I never valued work; I never had to work especially hard in school, so didn't really know how to study (even when I got to college). This meant i tended towards subjects that I was already good at, and means it was a lot harder to make myself well-rounded. It also meant that I was turned off of pursuing science as a career by a single worthless AP chemistry teacher in high school.