plagiarism question?

We were asked to write an essay about the themes in some stories we read in class. I was confused a little bit so I decided to read some other essays that covered the topic. After reading these essays, their points made so much sense to me that I wanted to write about the same ideas. My paper is pretty much the same thing as one of the essays. It has the same structure, the same points. However I did not cite this essay because other essays had the same points and I felt that its possible thousands of people can have the same thoughts as well. Overall my paper has the same points and structure, I just reworded everything into the way I wanted to write it. There was no copy and pasting.

Is this plagiarism?