Hi Nonsensical, I have had significant dreams that could be interpreted later all my life. I find it useful to peer into my subconscious and see what is really going on in there. In this case it seems to be suggesting a lack of faith in yourself because it will all be wasted effort. It's not a prediction, it's your mind expressing your doubts. I think dreams are fortunate when they can warn us like this.
Or maybe it was just AV playing up!