So many ideas - so little time

The truth is that I don't want to study. I really don't want to. I keep getting these new and seemingly exciting ideas for stories and clothes but as soon as I'm about to open a document to write them down or bring out some paper to quickly make a sketch I realize anew that I have an exam tomorrow that should be taking up all my time.
I hate not having an extra 15 hours every day to catch up on sleep.