Line from Trump's State of the Union address that did not age well: "“Incredibly, the average unemployment rate under my administration is lower than any administration in the history of our country.”
As we noted in our fact check at the time: "This is worth fact-checking because the average over three years is hardly comparable to a four- or eight-year average for other presidents." Imagine what the average will end up by the conclusion of Trump's term.
This is an example of how manipulated stats can backfire on politicians. You shouldn't be comparing yourself to full-term presidents before your term is up. Things can happen that make such claims appear foolish in retrospect.