Fast and Right: How Successful People Make Quick Yet Accurate Decisions

1. The "Reversible vs. Irreversible" Filter That Eliminates Hesitation

Amazon founder Jeff Bezos famously categorizes decisions into "one-way doors" (irreversible) and "two-way doors" (reversible). One-way doors—quitting a stable job, making a major investment—deserve careful analysis. But most decisions people agonize over are actually two-way doors that can be undone or adjusted.

Research by Professor Sheena Iyengar at Columbia University suggests that the average person makes roughly 35,000 decisions per day. Of those, only a tiny fraction are truly irreversible. What to eat for lunch, which email to reply to first, how to structure a meeting agenda—these are all two-way doors. If you choose wrong, you can make a different choice tomorrow. Yet most people invest the same level of seriousness into every decision, draining their mental energy on choices that barely matter.

To build this filter into a habit, start by asking one question whenever you face a choice: "Can I reverse this?" If the answer is yes, act immediately with imperfect information. If you are wrong, you can correct course. Then, spend one week logging every decision that made you hesitate. Note whether each was reversible or irreversible. Most people discover that over 90 percent of their hesitation moments involved reversible choices. That insight alone accelerates decision-making dramatically. Reserve your mental energy for the rare irreversible decisions that truly warrant deliberation—this is the foundation of deciding both fast and well.

2. Pre-Set Criteria: Decide Before the Options Appear

The biggest reason decisions stall is that people start figuring out their criteria only after options are on the table. In psychology, this is called "delayed construction," and it significantly degrades decision quality. Successful decision-makers flip this sequence—they define their standards before choices even appear.

For instance, before a hiring round, they might set a rule: "If a candidate scores eight or above on technical skill, team fit, and growth drive, extend an offer immediately." Before evaluating a new project, they pre-define three axes: "Does it leverage my strengths?" "Can I see results within three months?" "Am I genuinely passionate about the topic?" Warren Buffett has applied this approach to investing for decades, consistently using the same four criteria: "Do I understand the business?" "Does it have a durable competitive advantage?" "Is the management trustworthy?" "Is the price reasonable?"

The key is to keep criteria few—three at most—and measurable. Vague or excessive criteria recreate the same indecision you are trying to avoid. Research in cognitive psychology shows that humans can effectively evaluate only three to five factors simultaneously. Beyond that threshold, decision fatigue sets in, and people default to intuitive, lower-quality choices.

As a practical starting point, identify three categories of decisions you face frequently—for example, "whether to accept a work request," "whether to adopt a new tool," or "whether to attend a meeting." For each category, write down three or fewer criteria on paper and post them where you can see them at your desk. When the moment of decision arrives, you will cut through emotion and social pressure with consistent, high-quality judgment at speed.

3. The "70-90 Time-Box Method": An Evolution of the 70% Rule

Bezos's well-known advice to decide when you have 70 percent of the information is powerful in theory, but in practice people struggle to gauge whether they are at 60 or 70 percent. The solution is to pair the rule with a hard time limit—what we call the 70-90 Time-Box Method.

Here is how it works. First, assign a time cap based on the decision's importance: two minutes for everyday choices, one day for moderate ones, and one week maximum for major decisions. When 70 percent of your allotted time has elapsed, lock in a tentative best answer. Use the remaining 30 percent solely as a safety check—scanning for fatal blind spots, not searching for a better option.

For example, suppose you need to decide on a new vendor contract within one week. Spend the first five days gathering information and analyzing options. At the end of day five, make a tentative decision. Use the remaining two days exclusively to ask: "Is there a fatal flaw in this choice?" Do not ask: "Could there be a better option out there?" This distinction is critical.

This method works because it shifts your mindset from "find the perfect answer" to "confirm the good-enough answer." Research at Harvard Business School has shown that beyond the 70 percent information threshold, additional data improves accuracy by only a few percentage points, while the opportunity cost of delay can be enormous. A time box automatically rescues you from this trap of diminishing returns.

4. The Decision Journal: Continuously Sharpening Your Judgment

To further strengthen the ability to combine speed and accuracy, many successful leaders maintain a "decision journal." This is not a simple diary—it is a systematic tool for objectively analyzing your own decision patterns.

The method is straightforward. Every time you make a significant decision, record five items: (1) what you decided, (2) what alternatives existed, (3) why you chose this option and what evidence supported it, (4) how long the decision took, and (5) what the outcome was (this last item is filled in later).

Ray Dalio, founder of Bridgewater Associates, has practiced this technique for decades. In his book Principles, he writes that reviewing decision records reveals recurring biases and patterns of repeated mistakes that are otherwise invisible to the decision-maker.

Set aside fifteen minutes once a month to review your records. Over time, you will develop data-driven self-awareness: do you make better decisions when you take more time, or do your snap judgments actually produce superior results? Most people are surprised to find that the accuracy gap between carefully deliberated decisions and quick ones is far smaller than they expected. That discovery becomes the most powerful antidote to chronic hesitation.

5. Premortem Thinking: Eliminating Failure Before It Happens

Another powerful technique for raising decision quality is the "premortem," proposed by psychologist Gary Klein. Unlike standard risk analysis, a premortem asks you to imagine that the decision has already failed and then work backward to figure out why. By assuming failure as a certainty rather than a possibility, you neutralize optimism bias and surface risks that conventional analysis overlooks.

The process has three steps. First, after making a tentative decision, declare: "Six months from now, this decision turned out to be a disaster." Second, brainstorm every reason it might have failed. Set a three-minute timer and aim for at least five causes. Third, review the list and take action on the risks you can actually mitigate.

For example, suppose you are about to accept a job offer. A premortem might surface risks like "the team culture did not match my style," "the actual day-to-day work differed from what was described," or "the entire industry entered a downturn." The first two risks can be addressed before you sign—by requesting meetings with future teammates and asking for detailed job descriptions. The third is outside your control, so you simply acknowledge it as an accepted risk.

Studies have shown that groups using premortems identify over 30 percent more potential problems than groups using conventional risk analysis. Crucially, this technique does not sacrifice speed. It takes just five to ten minutes after a tentative decision is made, yet it dramatically improves accuracy.

6. Strategic Delegation: Focusing on the Decisions That Truly Matter

The final key to combining speed and quality is recognizing which decisions do not need to be yours and delegating them appropriately. Hidden among the choices people feel they "must" make personally are many that would be faster and better handled by someone else.

Entrepreneur Tim Ferriss established a rule at his company: any decision involving less than one hundred dollars was made entirely by staff, with no need for his approval. This reduced his personal decision load by 90 percent while tripling the speed of business decisions overall. The same principle applies at an individual level. In a team setting, let each member own decisions within their area of expertise. At home, let your partner take the lead on decisions in their domain of strength.

Three principles make delegation work. First, define the scope and authority clearly. Say something specific: "For this category of decisions, you may decide freely as long as the cost stays under a certain amount." Second, build a lightweight feedback loop. You do not need to micromanage—a brief weekly summary of outcomes is sufficient. Third, never punish a delegated decision that turns out poorly. If you do, the person will start avoiding decisions, and everything flows back to you.

Delegation is not laziness—it is a strategic allocation of limited cognitive resources toward the decisions that matter most. Pour your full energy into the irreversible, high-impact choices that only you can make, and trust capable people with the rest. This deliberate contrast is the hallmark of top-tier decision-makers.

Speed and quality in decision-making are skills, not talents. As your first step today, the next time you face a choice, ask yourself: "Is this a one-way door or a two-way door?" If it is a two-way door, challenge yourself to decide within two minutes. The accumulation of those small experiments will fundamentally reshape how you decide.