Raging Bull - the saga continues

So, as we all know, I got this from LoveFilm in November. I still have it. Started watching it a few days ago and I just got bored after 40 mins. Thought I did pretty well sticking it out for that long. I made the decision to stop the DVD and send it back. Something which I have still yet to do. Can't bring myself to post it, partly because I can't find the blasted envelope to do so and partly because I will feel a little bit of a failure for not seeing it through and for not being able to legitimately tick it off The List. Talk about dilemmas. Help me!!!