lesson or an idea from the Odyssey

I think an idea or message that can be taken away from the Odyssey, is that you should never give up and don't let anything get in the way of what your trying to accomplish. Odysseus never let the cyclops or calypso or any of the other obstacles that came in his way stop him from getting home to his wife and son. A way that we can use that method today is for example. Lets say i have a very hard English exam in two day I think I know it a hundred percent, and i really want to get a good grade. Even if I think I know the material I should still keep studying until it's test time.