What should I have accomplished by 12?

See what remarkable builders and entrepreneurs achieved at age 12

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Notable Achievements at Age 12

Justin Timberlake

Joined The All New Mickey Mouse Club

Cast member (Mouseketeer) from 1993–1995; met future collaborators Britney Spears, Christina Aguilera, JC Chasez, Ryan Gosling.

1993
99% confidence
Source
Christina Aguilera

Selected for The All New Mickey Mouse Club

After auditioning against thousands, was chosen as a 'Mouseketeer' and joined the show's 1993 cast; moved to Orlando for the program.

1992
99% confidence
Source
Andrew Carnegie

Emigrated to United States (Allegheny/Pittsburgh)

Carnegie and his family emigrated from Scotland and settled in Allegheny (now part of Pittsburgh), seeking work and better prospects.

1848
99% confidence
Source
Justin Bieber

Begins posting YouTube performance videos

His mother Pattie Mallette posted videos of him singing covers; the clips attracted a growing online following.

2007
98% confidence
Source
Ahmir Thompson

Debut as drummer at Radio City Music Hall

Filled in as a drummer for his father's band and debuted as a performer at Radio City Music Hall at age 12.

1983
98% confidence
Source
Michael Jackson

'I Want You Back' hits #1 on Billboard Hot 100

Jackson 5's 'I Want You Back' became their first No.1 single in the US, staying at #1 for four weeks.

1970
98% confidence
Source
Mark Twain

Death of father John Marshall Clemens

Father died of pneumonia; family financial strain followed.

1847
98% confidence
Source
Changpeng Zhao

Immigrated to Canada with family

Zhao and his family moved to Vancouver, British Columbia, Canada.

1989
96% confidence
Source
Ken Frazier

Mother's death

Frazier's mother, Clara Elizabeth Frazier, dies; he is raised thereafter primarily by his father.

1966
96% confidence
Source
Gábor Maté

Immigrated to Canada with family

Maté and his family emigrated from Hungary to Canada.

1956
96% confidence
Source
Thomas Edison

Left formal school; self-educated

Attended formal school only sporadically; mother taught him basics and he became largely self-taught through reading.

1859
96% confidence
Source
Sidemen

Combined YouTube subscriber total reported (May 2025)

As of May 2025 the Sidemen's combined YouTube subscriber total across group and member channels was reported as over 155.6 million (combined).

2025
95% confidence
Source
Ryan Kaji

Video 'Huge Eggs Surprise Toys Challenge' passes 2 billion views (Jan 2023 reference)

The specific Ryan's World video 'Huge Eggs Surprise Toys Challenge' exceeded 2 billion views (one of the most viewed YouTube videos).

2023
95% confidence
Source
Andrea Antonelli

Won WSK Champions Cup, South Garda Winter Cup, ROK Cup Int. Final (Mini)

Multiple international karting victories in the Mini category, consolidating reputation.

2018
95% confidence
Source
Troye Sivan

Joins YouTube (channel activity begins)

Joined YouTube (account activity dated 1 Oct 2007); began posting singing content on the platform.

2007
95% confidence
Source
Justin Bieber

Places 2nd in local singing competition

At age 12 he performed Ne-Yo's 'So Sick' in a local Stratford contest and placed second; his mother uploaded the video to YouTube.

2007
95% confidence
Source
Laura Deming

Moved to San Francisco to join Cynthia Kenyon's lab (UCSF)

At 12 she joined Cynthia Kenyon's lab at the University of California, San Francisco, beginning hands-on research in aging biology.

2006
95% confidence
Source
Laura Deming

Homeschooled childhood — self-taught advanced subjects

Grew up homeschooled in New Zealand; taught herself calculus, probability & statistics, French literature and history.

2006
95% confidence
Source
Keke Palmer

TV appearances: Knights of the South Bronx, ER, Second Time Around

Featured in multiple TV projects and continued building screen credits.

2005
95% confidence
Source
Dan Abramov

Started coding with Visual Basic for Applications (VBA)

Began exploring programming via Microsoft PowerPoint automation and Visual Basic for Applications; bought bootleg technical books and practiced macros and coordinates-based animation.

2004
95% confidence
Source

💡 What this means for you

At age 12, you're at a pivotal point where many successful entrepreneurs made their breakthrough. Whether you're building your first company or scaling an existing one, these examples show what's possible with focus and execution.

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