You have finished the assignment. The word count is right, the introduction has been read so many times you could recite it, and the submit button is waiting. Then you spot it. A sentence says the opposite of what you meant, or a figure in your discussion does not match your results table. That sinking feeling is common, and it has little to do with carelessness. Over the years I have watched...

You have read the papers, filled the margins with highlighter and built a reference list that runs to three pages. Yet the draft still reads like a very organised list. That is common, and it rarely means you read the wrong things. It usually means the thinking has not reached the page yet. A strong literature review lives in the gaps between sources: where they agree, where they clash, and...