Most lists of habits are long, and that is the trouble with them: a hundred good ideas feel generous tonight and useless by morning, because nothing on the page says where to begin. This catalog adds the missing step, which is choosing. Forty-two small habits sit in six drawers, and you pull no more than three.

How the catalog works

The cabinet has a drawer for each part of a life: health, mind, money, home, people and work. Open one and its seven cards spread out, each naming a single action, how long it takes, whether it is daily or weekly, and the habit it takes the place of. Missing the one you want? Write your own; every drawer has room for two.

Pull a card and it lands on your slip in handwriting, with one next step to do today and the tracker that suits its rhythm. The slip holds three. Once it is full, you return a card before pulling another; returning takes two taps, so nothing leaves by accident.

The cabinet keeps notes too: a drawer you pulled from gets a tag with the count, a drawer you opened and left says looked, and the rest stay bare. Under the slip, a short reading names the drawer you lean toward, the ones you passed over and the ones you never opened. It is not a score, just a way to notice that every card you chose is about your body, say, and none is about the people around you.

The list, drawer by drawer

• Health: water before coffee, a ten-minute walk after lunch, the phone charging outside the bedroom, ten squats while the shower warms up, a fruit bowl on the counter, one vegetable at lunch, lights out at the same time each night.
• Mind: ten pages before bed, five slow breaths before email, five minutes outside without a phone, tomorrow's worries on paper, one word for your mood at lunch, five minutes of a language, one still minute after you park.
• Money: a morning look at your balance, ten dollars to savings every Friday, a note of what you spent, a Sunday look at the week, tomorrow's lunch packed after dinner, one store email unsubscribed a day, one subscription reviewed each week.
• Home: the bed made before you leave the room, dishes done before bed, one thing put away whenever you leave a room, laundry every Wednesday, a clear entryway each evening, plants watered on Sunday, trash out the night before pickup.
• People: a short hello to one friend, one meal without screens, one real question at dinner, a Sunday call to family, a specific thank-you, the phone face down while someone talks, a weekly walk with someone.
• Work: tomorrow's top three before you log off, a first hour without notifications, the hardest task before email, a stretch once an hour, a clear desk before you leave, a Friday review, ten minutes on a work skill.

Why every card is this small

A habit forms when you repeat one action in the same setting until the setting starts it for you, which is why each card is a single action tied to a moment you already have: after lunch, before bed, when you park. Benjamin Gardner and colleagues note that simple actions like drinking water became automatic sooner than elaborate routines like 50 sit-ups, and they advise small, manageable changes because an early failure is discouraging.

The same paper explains the line on each card that begins with "in place of." Nobody can form a habit of not doing something, so the way out of a bad habit is a new action that takes over its moment. Scrolling in bed gives way to a charger in the hallway; lunch at the desk gives way to a walk.

Why the slip stops at three

Ambition says pull ten. In studies by Amy Dalton and Stephen Spiller, detailed plans that help with a single goal stopped helping once people made them for several goals: the planning drew attention to how hard the whole set would be, and commitment dropped. Three is a ceiling, not a target. One card kept most days is a real beginning.

How long before it sticks

Plan on weeks, not days. In the best-known study, volunteers needed anywhere from 18 to 254 days before a daily action felt automatic, and missing a single day did not knock the process off course. Gardner's summary puts the average plateau near 66 days, roughly ten weeks. The group was modest and chose simple eating, drinking and activity habits, so treat the figures as a range, not a promise.

Counting lets you watch the weeks add up. Every card on your slip names the tracker that fits it: the Daily Habit Tracker for everyday cards, the Weekly Habit Tracker for the Friday transfer or the Sunday call. If one habit keeps slipping, take it apart on the Habit Loop Worksheet to find the missing cue or reward.

When to use it

Open the catalog when you want a change but not a particular one, or after a stretch when every routine fell away. Come back once one of your three runs without thinking, and pull the next card, perhaps from a drawer you left shut the first time.