Loathe failing a test.
I don't think this is necessary to include. It is better to say you loathe instances of mediocrity in your own work. If you say "loathe failing a test," it gets the reader thinking about you as someone who fails tests.
The task involved late nights, early
mornings , and even weekends nose deep in my textbooks.
This statement is too obvious:
Studying is by far one of the most important skills required to be successful during school...I have a sense that showing how much you "deserve" the scholarship is best accomplished by showing that you have a clearly envisioned, detailed plan for contributing meaningfully in the near future to your chosen field, to society, etc. So... can you include some more discussions of your intentions for the future?