マインドマップの書き方5ステップ|アイデアが出ない・やることが決まらない時の思考整理を手帳で

5 Steps to Mind Mapping: Organizing Your Thoughts in a Planner When You’re Stuck for Ideas or Priorities

🧠 Organizing Thoughts & Planner Techniques

5 Steps to Mind Mapping: Organizing Your Thoughts in Your Planner When You're Stuck for Ideas or Unsure of What to Do

On days when you feel stuck, don't overthink—just write. Here is how to turn mental clutter into your next actionable steps.

📅 October 2026 ⏱ Approx. 5 min read ✍ Reiko Tanaka / Forte Diary

The moment someone asks, "Do you have any new project ideas?", your mind goes blank. You have a mountain of tasks, but no idea which one to start with. You feel a sense of unease, but you can't quite pinpoint what's bothering you. Whether at work or in your private life, everyone has those days where you feel stuck, indecisive, or disorganized.

✦ Do you ever experience this?
💡 BrainstormingYou sit at your desk for 30 minutes before a meeting or project, but not a single angle comes to mind.
📋 Organizing TasksYou have so much to do this week that you can't decide where to begin. You've written down your to-do list, but just looking at it makes you tired.
☁️ Mental ClutterYou dwell on the same things over and over without even knowing what you're worried about. You start thinking about it again right after you get into bed at night.

In fact, I was in this exact state recently. Even though it was already October, I couldn't plan the month at all. Maybe I was just feeling a little drained after finishing my first radio appearance. I opened my planner, but my pen just stayed still.

What helped me then was a mind map—the first one I had written in a while. By the time I finished, my mind felt clear, and the theme for the month had become unmistakably visible.

In short, when you're short on ideas or don't know what to do, the shortest path isn't to rack your brain, but to simply spread your thoughts out on paper without trying to organize them perfectly. From there, you just pick out the "actions" and "priorities" to drop into your monthly or weekly schedule, turning thoughts into action.

Reiko Tanaka

Reiko Tanaka

Forte Diary Creative Director

On Sunday, while waiting for my daughter to finish her English proficiency test, I opened my planner at a cafe and made a mind map of "How to spend October through December." Lately, I’ve been thinking that happiness might be a balance of "time, money, and health," so I used these three as my main branches.

As I kept writing whatever came to mind, my head cleared up. From there, my theme for October became "developing new products" and intentionally creating "white space" in my schedule. That wasn't something I had thought of at all before I started writing.

What is a Mind Map? When to Use It for Work, Study, and Daily Life

A mind map is a method for organizing thoughts by writing a theme in the center and branching out radially. Because it isn't restricted by order or hierarchy, allowing you to connect ideas through association, it can be used for everything from work to daily life.

✦ When to use a Mind Map
📊 Work & CareerBrainstorming, weekly task organization, meeting minutes, presentation outlines
✍️ Learning & Self-DevelopmentReading notes, studying for certifications, self-analysis (strengths, weaknesses, goals)
🏠 Private LifeTravel planning, event prep lists, logistics for moving or spring cleaning, sorting through worries or mental clutter

How to Write a Mind Map: 5 Steps

Open your notebook to a two-page spread and follow these 5 steps: 1) Write the theme in the center, 2) Extend 3–5 main branches, 3) Add whatever comes to mind, 4) Mark words that stand out, and 5) Pick actions to move into your schedule. The estimated time is 10–15 minutes.

STEP 1: Write the theme in the center

📓 Use your notebook

Place the theme you want to think about in the center of the spread

Open your journal pages across a spread and write your theme in the center, circling it. Things like "How to spend Oct–Dec," "New product ideas," or "Next month's work" are fine—broad is okay.

STEP 2: Extend 3–5 main branches

Extend large categories as branches from the theme. If you get stuck, borrowing axes that are important to you, like "Time, Money, Health" or "Work, Family, Myself," is a great trick. Once the branches are set, it becomes easier to associate ideas from them.

STEP 3: Add whatever comes to mind

Add words and phrases as smaller twigs from each branch. Don't worry about "should I write this?" or "is this redundant?"—just keep writing in the order thoughts come to you without stopping.

✦ Forte Diary Tips | Don't try to make it look pretty

It's okay if your handwriting is messy or your lines are crooked. If you worry about logical connections, your pen will stop. The goal isn't to be neat. In fact, if you write with momentum, your most genuine ideas will emerge.

STEP 4: Step back and mark what catches your eye

When you finish, take a step back and look at the whole thing. Put a circle or a star next to words that make you feel, "I want to do this" or "This is interesting." What you truly value will rise to the surface.

STEP 5: Pick actions and priorities, then transfer to your schedule

Pick only 1 to 3 "actions" and "priorities" from what you marked. The point is not to pick too many. Then, write these into your monthly or weekly schedule in a way you can actually execute. Only after doing this does a mind map become something "usable."

Should you use a notebook or a planner for mind mapping? 3 benefits of using your planner

Mind maps written in separate notebooks or apps often end up being just a source of fleeting satisfaction. When your "thinking place" and "executing place" are separate, the actions rarely make it to your schedule.

Forte Planner connects thoughts to actions in one place for these three reasons:

✦ 3 reasons Forte Planner is suited for mind mapping
Two-page spreadUse the journal pages of the Forte Planner across the fold. It opens 180 degrees flat, making it easy to write even in the gutter.
Dot gridUnlike dense ruled lines, dots aren't intrusive. They won't interfere with the free-form curves and circles of your mind map.
Direct transcriptionYou can write the ideas and actions that emerged directly into the monthly and weekly schedules within the same book.
✦ Forte Diary TIPS: Make it easy to review at the start of the month

Write the page number of your mind map in your journal's index page. If you look back at it at the beginning of the month or week, you can remind yourself, "What was it that I really wanted to value?"

It's okay to have days when nothing comes to mind.
Don't overthink it—just start by writing one thing down.

✦ Forte|Planner 2027

A planner that organizes your thinking space and execution space in one.

With a design that integrates My Life Planner, Monthly, Weekly, and Journal pages, you can directly turn the ideas from your mind maps into your daily actions. A5 size, 5 colors, starts in December.

See inside the Forte|Planner 2027 →

Just flipping the pages will show you how to use it 📖

Frequently Asked Questions

Q1

Do I have to use colored pens for mind maps?

No, a single pen is perfectly fine. As you get used to it, changing colors for each branch can make it easier to read. Just start casually with whatever pen you have at hand.

Q2

How much time should I spend on this?

10–15 minutes is a good guideline. Setting a time limit helps keep your hands moving without overthinking. It's easy to do during a wait at a cafe or between work tasks.

Q3

I can't think of any main branches.

If you're stuck, borrow existing categories like "Time, Money, Health" or "Work, Family, Myself." Just deciding on three branches makes it much easier to start writing.

Q4

Should I review the mind maps I've written?

Yes. We recommend reviewing them at the start of the month or week. If you list the page numbers in your index, you can open them instantly. It's a great trigger for remembering what you wanted to value and adjusting your monthly/weekly plans.

Q5

How should I write a mind map when I don't have any ideas?

First, write the theme in the center and make major categories like "Time, Money, Health" or "Work, Family, Myself" your branches. Then, just add every word you associate with those branches without judging them. If you decide to "write down everything I think of" instead of "coming up with a good idea," you'll find it harder to get stuck.

Q6

Is it better to use a notebook or a planner to organize thoughts?

If you want to turn what you write into action, a planner is recommended. Since you can write the actions picked from your mind map directly into your monthly and weekly schedules in the same book, there's no need for transcription, making it easier to take action.

✦ Newsletter

Get planner techniques, product news,
and exclusive offers via email.

We deliver planner techniques that bring white space to your busy daily life.

📩 You can unsubscribe at any time.

Back to blog