I found Hilary Lehman's column to be particularly poor advice for students.
An unstable economy does not excuse failing to plan for the future. Students should be thinking more about what they are going to do with their degrees when they graduate, especially if they will be graduating with loans.
Instead of telling students not to worry about things they can't control, why not encourage them to use the resources on campus that can help them plan for the future?
If you don't know what to do with your major or your life, visit the Career Resource Center. I suggest doing a Google search of the "Occupational Outlook Handbook" to learn more about careers and to see if your career choice is actually in demand.
I believe we are selling ourselves short to accept Lehman's claim that "success has been redefined." As someone in graduate school who has also seen many friends graduate and enter the workforce, the people who had to move back in with the parents are the ones who didn't plan and think about the future accordingly.