just know your texts. try some practice essays. you pretty much know what the essay question will be, it'll be something broad about journeys/etc. try some past papers and sit yourself down and time yourself to forty minutes, see if you can do it
try memorising some note-worthy quotes that would support your argument about journeys. if you have a hard time memorising quotes, you can always write them out a few times, that way its rattled into your brain, or for faster approaches, print them in big writing, tape them around your room, or record yourself saying them and listen to them every now and then.
seriously past papers is the answer.