Commit to 15 min at a time and make sure you do an outline so you don't have as much blank page syndrome. Then you can turn points into sentences. It may not be an amazing essay, but I've come to the conclusion that all I need to do it pass. To adapt a saying for myself, "what to you call the person who graduates last in nursing school: a nurse!" I'll do well in my labs and practicums. That's what works for me and you'll have to figure out what works for you.