Procrastination in essay writing

I have to complete my fourth essay in the Pathways course The Possible World Machine. The essay is called

“What Is Perception ? Explain The Role Of Perception In An Account Of The Nature and Limits Of Human Knowledge”

I did the first draft a few weeks ago, but seem to not be getting the time to finish it. The library near me is only open til 6, which never gives me enough time and then if I am busy on the weekend, that’s it for another week.In Portsmouth I could get access to the university library for 50 pounds a year,and that’s open 24 7. When I get home after work I never seem to have the energy, so it may come to that.