Critical thinking means becoming aware of your thinking process. It's a human trait that allows us to step outside what we read or write and ask ourselves, "does this really make sense?"
Successful writing forms a relationship with the audience, reaching the reader on a deep level that can be dynamic and motivating. In contrast, when writing fails to meet the audience's exceptions, you already know the consequence.
Learning to write effectively involves reading, writing, critical thinking, and hard word.