A year-long experiment: can you train happiness?
Gretchen Rubin was a lawyer by training and a writer by calling when she decided, on an ordinary subway ride in New York, that her life was already good but could deliver more day-to-day satisfaction. There was no big crisis knocking at her door, just that feeling of always being busy without sensing that the days added up to anything. That's where the idea came from: spend an entire year testing small changes, month by month, in a personal experiment recorded in a journal.
The plan wasn't to change jobs, cities, or spouses. It was to take the life she already had, with a steady job, young daughters, and a husband, and adjust concrete habits: going to bed earlier, holding grudges for less time, giving more compliments, complaining less. It's the same logic for anyone in the U.S. with a steady paycheck, rent paid on time, and family nearby who still feels like they're living on autopilot, not quite sure what's missing.
Each of the book's twelve months got a theme, such as the body, marriage, work, kids, and money, and within it small resolutions tested in practice, not vague New Year's promises. That format, month by month, one concrete task at a time, holds the whole book together, and it's the one we'll follow here.
