I am a philosophy undergrad. What should I do to guarantee I get the most I can out of grad school?

Remain fascinated to the point of distraction by the questions, problems,solutions, arguments of philosophy. I don't know how much this is inone's control: you can avoid bad teachers and seek out inspiring ones;you can select to focus on areas that grip you; you can learn to put aproject away for a while if it's causing you grief; etc. But there'sonly so far one can force a fascination. Sadly, there are no guaranteesof the kind you seek. Or rather, not so sadly.