Explanation:

Be mindful of the use of I in your writing because it can make your argument sound overly biased. There are two primary reasons:

Excessive repetition of any word will eventually catch the reader’s attention—and usually not in a good way. The use of I is no different.

The insertion of I into a sentence alters not only the way a sentence might sound but also the composition of the sentence itself. I is often the subject of a sentence. If the subject of the essay is supposed to be, say, smoking, then by inserting yourself into the sentence, you are effectively displacing the subject of the essay into a secondary position. In the following example, the subject of the sentence is underlined: