Blog
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How long does it take to build a habit?
The 21-day rule traces back to a 1960 plastic surgery book, not a study. The research points nearer 66 days, with a range from 18 to 254.
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How to track your mood (and actually keep it up)
What to record, when to record it, how long before patterns appear, and the two design mistakes that make most people quit in the first fortnight.
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The link between your habits and your mood
Motivation usually follows action rather than preceding it. Which daily habits move mood most, and how tracking both together reveals the direction.
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Habit stacking: attach a new habit to one you already have
The formula, the implementation-intentions research behind it, how to pick an anchor that holds, and the four ways stacks usually fail.
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The winter arc, designed so it survives February
Ninety days is a sensible window for habit formation. Eight rules starting at once in the darkest month of the year is not.
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What work actually does to your mood
Hours predict less than you would think. Control over how you work, and whether you properly detach afterwards, predict more.
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Burnout or just tired? What a mood log can tell you
Tiredness responds to rest and burnout does not. The five things a month of entries can tell you that memory cannot.
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Sleep and mood: why timing beats total hours
Short sleep amplifies reactions rather than dulling everything, and consistent timing matters as much as duration. Why to read it with a one-day lag.
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How much exercise actually changes your mood
The gains are concentrated at the low end. Going from nothing to a short daily walk does most of the work available.
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Caffeine, alcohol and the delayed mood hit
Both have their real effect hours later, routed through sleep, which is why almost nobody connects them from memory.
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Social media and your mood: what actually holds up
Average screen time is a weak predictor. Active versus passive use, displacement and late-night scrolling are where the evidence is.
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What to actually write in a mood journal
Prompts for ordinary, bad and good days, plus the line between writing that helps and writing that turns into rumination.
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How to read your own mood data without fooling yourself
Find your baseline, check day-of-week first, look for lags rather than same-day matches, and avoid the four ways your own data misleads you.
MoodMark tracks your mood and your habits in the same place, so you can see which routines actually move the needle.
