As I walked slowly to my desk, I pictured myself, as I had done several times before, telling old Voldy I was quitting. Whenever I had the temptation to stop reading the immensely boring editorials and random reading material, I was subjecting myself to these days for my upcoming GDs/interviews, I would picture myself telling Voldy I was out of here and then his possible reactions. It was my favourite daydream.
Source: wiktionary