The 10/10/10 Rule: Decide by Thinking 10 Minutes, Months, Years Out

What is the 10/10/10 rule?

The 10/10/10 rule is a quick way to check whether the feeling of the moment is making your decision for you. For each option, you ask three questions: how will I feel about this in 10 minutes, in 10 months, and in 10 years?

The answers often disagree, and that is the point. Saying no to a friend’s request might feel awful in 10 minutes, fine in 10 months and irrelevant in 10 years. Skipping a hard conversation with your manager might feel like relief in 10 minutes and like a costly mistake in 10 months. Laying the three horizons side by side makes it clear which one you are actually letting decide.

Most decisions that go wrong emotionally are not made with bad information. They are made in the 10-minute frame.

Where it comes from

The rule comes from Suzy Welch, a business journalist and former editor of Harvard Business Review. She developed it as a personal tool for the collisions between work and family life and later wrote it up in her 2009 book 10-10-10: A Life-Transforming Idea, which collects stories of people applying it to careers, relationships and parenting.

The idea connects to a large body of psychology on how people think about time. Research on temporal discounting shows people tend to overweight what happens now relative to what happens later. Research on affective forecasting, associated with psychologists Daniel Gilbert and Timothy Wilson, suggests people often misjudge how intensely and how long they will feel something in the future. The 10/10/10 rule does not solve those problems, but it forces you to look at the future frames explicitly instead of letting the present one dominate.

How to use the 10/10/10 rule

1. Frame the decision as clear options. “Tell my cofounder I want to leave” vs “stay another year.” Two or three concrete options work best.
2. Write the 10-minute answer for each. Be honest about the immediate emotion: dread, relief, embarrassment, excitement.
3. Write the 10-month answer. Picture yourself next season. What has happened as a result? How does it feel now that the first emotion has passed?
4. Write the 10-year answer. At this distance, does the choice matter at all? Does it connect to who you want to be or the life you want? This is where second-order thinking helps: what did this choice lead to?
5. Compare and decide. Notice which horizon your instinct was listening to. If the 10-minute feeling was driving and the 10-month and 10-year answers point the other way, that is usually your answer. If all three agree, decide quickly.

Writing the answers down matters. In your head, the 10-minute feeling tends to win the argument by being the loudest.

3 real-world examples

Business

Say a manager needs to give a team member hard feedback about missed deadlines. In 10 minutes: avoiding it feels better, giving it feels tense. In 10 months: avoiding it means the problem has grown, others have noticed, and the conversation is harder; giving it means the issue is likely resolved or at least clear. In 10 years: the manager is known either as someone who deals with problems or someone who does not. The 10-minute frame was the only one that favored silence. (A hypothetical example.)

Personal life

You are invited to a family event on a weekend you had planned to rest. In 10 minutes, declining feels like a relief, maybe mixed with guilt. In 10 months, you probably will not remember the rest, but you might remember missing the event if it mattered to someone. In 10 years, it depends on the relationship. Sometimes the rule says go. Sometimes it says the event is one of many and rest is the right call. The rule does not give a fixed answer; it shows you which frame you were using.

Investing

When markets drop sharply, the urge to sell is a 10-minute feeling. Asking how you will feel about selling in 10 months and 10 years, given your actual plan and time horizon, brings the long frame back in. Bad news and losses feel heavier than they often prove to be, which is the negativity bias at work. The rule is not a forecast about markets; it is a check on whether panic is making the decision.

Common mistakes

• Only doing the 10-year question. Long-term thinking alone can justify ignoring real short-term costs. All three horizons count.
• Pretending the 10-minute feeling does not matter. It is real information. Sometimes the immediate discomfort is a signal, not just noise.
• Assuming you can predict your future feelings perfectly. You cannot. Treat the 10-month and 10-year answers as estimates, and be humble about them.
• Using it for decisions that are mostly math. For a choice between two mortgages, run the numbers. The rule is for decisions where emotion is clouding judgment.
• Doing it only in your head. Written answers are harder to fudge.

10/10/10 rule vs regret minimization

The two work together: use regret minimization for the big leap, and 10/10/10 for the many smaller choices around it.

The Mentarium take

The 10/10/10 rule is the best tool we know for decisions you already understand but keep avoiding. It does not add information; it removes the distortion of the moment. That makes it cheap enough to use daily.

In the Model Stack for a big purchase, we pair it with opportunity cost and margin of safety: the numbers tell you whether you can afford it, and 10/10/10 tells you whether you will still want it. In the Mentarium Decision Loop, it fits in the Stress-test step. Our one addition: when you write your Decide entry in a decision journal, record your 10-month prediction, then check it at the Review step 10 months later. You will learn how good you are at forecasting your own feelings, which is the one skill the rule depends on. It also pairs with reversible decisions: if the door is two-way and only the 10-minute frame objects, walk through it.

A small variation helps when other people are involved: run the three horizons for them too. How will your colleague, partner or child feel about this choice in 10 minutes, 10 months and 10 years? Often a short-term disappointment for someone else turns out to matter much less, or much more, over time than it seemed in the moment. Doing it for both sides usually makes the conversation about the decision easier as well. It also guards against the opposite mistake, deciding only for yourself, which can look sensible on paper and still cost a relationship.