I have a birthday coming up in a month and some. So let's look at what other people had managed when they finished being 26:
At age 26:
American anthropologist Margaret Mead wrote her famous dissertation, Coming of Age in Samoa, which claimed that in some societies adolescence is not a particularly difficult time.
Albert Einstein published five major research papers in a German physics jornal, fundamentally changing man's view of the universe and leading to such inventions as television and the atomic bomb.
Benjamin Franklin published the first edition of Poor Richard's Almanac, which was to play a large role in molding the diverse American character.
Soviet cosmonaut Valentina Chereshkova became the first woman to travel in space.
College dropout Steve Wozniak co-founded Apple Computer.
Eli Whitney invented the cotton gin, revolutionizing the economies of the United States and Britain.
Antoine Joseph Sax invented the brass saxophone.
"Johnny Appleseed" brought apple seeds to the Ohio Valley.
Napoleon Bonaparte conquered Italy.
Gon Yangling memorized more than 15,000 telephone numbers in Harbin, China.
British ethologist Jane Goodall set up camp in the Gombe Stream Chimpanzee Reserve on Lake Tanganyika and began studying the lives of chimpanzees.
Ken Kesey published his first novel, One Flew over the Cuckoo's Nest.
And I should start thinking about age 27. For that year:
At age 27:
Kurt Vonnegut, Jr. dropped out from his job at General Electric to become a full-time writer.
Henry David Thoreau went off for two years to live alone in a cabin at Walden Pond.
Cosmonaut Yuri Gagarin became the first person in space.
Memphis millionaire Frederic W. Smith, whose father built the Greyhound bus system, founded Federal Express.
Scottish botanist David Douglas discovered the Douglas fir.
Ernest Hemingway published his first novel, The Sun Also Rises.
Boston dentist William Morton pioneered modern anaesthesiology after learning that inhalation of ether will cause a loss of consciousness.
That doesn't look as bad. I could pioneer modern anaesthesiology. Much easier than publishing Poor Richard's Almanac.