Gretchen Rubin
Author who suggested splitting a day into four quarters to allow for resets and prevent a bad start from ruining the whole day.
Videos Mentioning Gretchen Rubin

How to Negotiate a Prenup — Ramit Sethi
Tim Ferriss
Smart author who wrote a book about organizing her house and workspace, an example of applying intelligence to different life areas.

Gretchen Rubin Interview | The Tim Ferriss Show (Podcast)
Tim Ferriss
Author of several New York Times bestsellers, including 'Better Than Before,' 'The Happiness Project,' 'Happier at Home,' and 'The Four Tendencies.' She also hosts the 'Happier with Gretchen Rubin' podcast.

Best Ways to Build Better Habits & Break Bad Ones | James Clear
Andrew Huberman
Author who suggested splitting a day into four quarters to allow for resets and prevent a bad start from ruining the whole day.

Ep. 247: The Productive Life (w/ Sarah Hart-Unger)
Cal Newport
Author and speaker known for her 'Four Tendencies' framework, mentioned in the context of personality types and task ownership.