Hard work, smart work or team work.
Smart work is the answer. Team work is never part of any examinations.
Hard work gets you started but smart work will push you through.
Smart equals working hard on things that are worth hard work. Just
repeating one section of topic 100 times isn't.
Studying difficult topics in different ways is smart work. Using your
imaginative power is smart work.
So aim for the smart work. Analyze your work or study load and get
things done smartly.