These traits separate the successful students from the not-so-successful ones.

The first year of college is a tough transition, and for many students, a disillusioning one.

A study conducted last fall at the University of Toronto found that incoming students arrived with unreasonably optimistic expectations. On average, students predicted they would earn grade-point averages of 3.6. Those dreams were swiftly punctured. By the end of the year, the average freshman had only a 2.3.

Source: Why students who do well in high school bomb in college
My Comments: If I am being honest, I think my son exhibits a bit of both, with a slight bias to the divers.  I chalk this up to entering college a bit young and immature.  Hopefully, he can develop some grit.