How do you not have a footnote repeat itself?

To avoid repeating a footnote, ensure that each footnote is unique by assigning a new number or symbol for each reference. If you need to cite the same source multiple times, use a shortened form in subsequent footnotes or refer back to the original citation. Additionally, you can use phrases like "Ibid." for consecutive references to the same source. Always follow the specific citation style guidelines you are using, as they may have particular rules for handling repeated citations.