Context
An older family of the same idea
The sentiment is far older than 1997, which is part of why a grande dame like Eleanor Roosevelt feels like a plausible source. A whole family of “do the thing you fear” sayings runs back through the 20th and 19th centuries.
Ralph Waldo Emerson wrote “Always do what you are afraid to do” in his 1841 essay Heroism, and Roosevelt’s own 1960 “You must do the thing you think you cannot do” sits squarely in the same tradition. But a shared theme is not the same as authorship of a specific sentence.
Same idea for 150 years — but this exact sentence is Schmich’s, 1997.
More on the misattribution mechanics
Misattribution tends to flow uphill toward fame: an anonymous or lesser-known author’s line gets reassigned to whoever sounds most quotable. Roosevelt, a byword for courage, is a magnet for courage quotes. Once a line appears in a printed book (here, a 2008 novel) with the wrong name, aggregators copy it and the error hardens.