I also went through a bad case of the "so what"s. It is the nature of the City Lit Fine Art Course that you are left to your own devices. The tutors do their best and I had a few good tutorials that gave me hope, but generally there is a little support to see you past the nihilism that overcomes you. And perhaps, nor should there be. If you have any aspirations to becoming an artist: it seems obvious that you need to get yourself through to a place where it does seem worthwhile.
At some point in the spring when I was feeling particularly down, I had a tutorial with Liz Ellis. She is very supportive (background as a mental health nurse!) and picked up on my interest in William Kentridge. She lent me a substantial catalogue from his big London show of five years ago. It was a hugely stimulating. Not only supporting my interest in his animation, but also some excellent material on his approach to art and making art. One particular quote stood out for me and had a significant impact on kick starting me into a more productive phase: