How to Make Big Life Decisions (Without Second-Guessing Forever)
Big life decisions rarely come with a right answer. Here's a six-step process, drawn from research on the choices people later feel good about, plus a simple worksheet to weigh your options.
Knowing how to make big life decisions comes down to process, not certainty. Name the real question you're answering, widen your options, test each one against your values and the person you want to become, take enough time to think it through deliberately, then commit — and set a date to review how it's going.
Whether to change careers, move to a new city, go back to school, start a business or commit to a relationship, big life decisions rarely come with the right answer printed on the back. You can't test-drive the next ten years. What you can do is make the decision well: with a clear question, an honest look at yourself and a process you can trust. Here's how.
What makes a decision "big"?
A decision is big when it is hard to undo and it changes who you are from day to day. Choosing a phone plan is easy to reverse and doesn't touch your identity. Choosing a career, a city or a long-term partner usually does both.
That combination is why these choices feel so heavy. The stakes are high, the information is incomplete, and the options often can't be compared directly — a higher salary on one side, closeness to family on the other. No spreadsheet settles it.
It helps to sort your decision into one of two kinds:
- Two-way doors. You can walk back through if it doesn't work: trying a new role inside your company, taking a sabbatical, renting in a new city before buying.
- One-way doors. Reversing is expensive or impossible: selling a business, emigrating with your family, signing a long-term commitment.
Most decisions are more reversible than they feel. If yours is a two-way door, you can move faster. If it's a one-way door, slow down and use every step below.
How to make big life decisions: a 6-step process
1. Name the real decision
Big decisions often arrive disguised as smaller ones. "Should I take this job offer?" may really be "Do I want to keep building this career, or change direction?" "Should we move?" may really be "What do we want the next five years to look like?"
Write the decision down as a single question. Then ask what problem this choice would solve, and what "good" would look like a year from now. If you can't answer, you may be working on the wrong question.
2. Widen your options
We tend to frame big decisions as yes or no, this or that — and a choice between only two paths can feel like a trap. Before you compare, look for at least one more:
- Could you try a smaller version first — a trial period, a side project, a short-term lease?
- Could you combine parts of both options?
- Is there a timing option — not now, but in six months, once a clear condition is met?
A third option often turns out to be the best one. Even when it isn't, it loosens the feeling of being stuck between two doors.
3. Test each option against your values
Values are the things you'd still want even if nobody were watching: security, freedom, growth, family, creativity, contribution. Pick your top three to five and score each option honestly against them.
This isn't about arithmetic. It's about noticing where an option that looks good on paper quietly works against something you care about — or where the option that scares you lines up with almost everything that matters.
4. Picture who each choice turns you into
Every big decision creates a slightly different version of you. So instead of asking only "What will I get?", ask "Who will I become if I choose this — and do I want to be that person?"
Imagine an ordinary Tuesday two years into each option: where you wake up, what you work on, who you spend your time with, what you're learning. The option whose Tuesday you'd genuinely want to live is usually telling you something.
5. Slow down and think it through
Speed feels decisive, but research on real-life choices points the other way. When behavioural scientist Adrian Camilleri asked people to look back on their biggest life decisions, the ones they rated well tended to be decisions they had taken more time over and approached analytically rather than on impulse (Adrian Camilleri, Psychology Today, 2021). That's a useful guide to how to make better decisions in life generally:
- Give yourself a deadline that matches the stakes — days for a two-way door, weeks for a one-way door.
- Write your reasoning down. Seeing it on paper exposes gaps your head skates over.
- Talk it through with someone who asks questions rather than hands you an answer. Explaining your thinking out loud is one of the fastest ways to find out what you actually believe.
6. Decide, then set a review point
Waiting for certainty is itself a decision — usually a decision for the status quo. In the same research, decisions that involved making a change were rated more positively than those that didn't, and confidence mattered: 88% of people who felt extremely confident at the time later rated their decision as very good, compared with 32% of those who felt no confidence at all. That's a correlation, not a guarantee — but it suggests the way you decide shapes how you live with the result.
Confidence doesn't come from knowing the outcome. It comes from knowing you chose carefully. Once you've decided, put a review date in your calendar — three or six months out — and decide now what you'll look at then. That turns "What if I'm wrong?" into "Here's when I'll check."
Know your decision style
Two people facing the same choice can need very different things to decide well. Some of us gather information until the deadline forces our hand; others commit fast and work it out later. Some need to talk a decision through; others need quiet time alone with it.
Knowing your pattern lets you adjust the process. The over-researcher sets a firm deadline. The fast decider adds a cooling-off day. The person who thinks out loud books a conversation before deciding.
Personality frameworks can help you see the pattern. Some people use MBTI; others use BaZi, a centuries-old Chinese framework that describes temperament from the date and time you were born. Used well, tools like these aren't about predicting what will happen. They're a mirror for how you tend to think, so you can make the decision in a way that fits you.
A simple worksheet for big decisions
Copy these prompts into a notebook or document and answer them for each option — including the third way you found in step 2. Then leave it overnight before you read it again.
- Best realistic outcome: what happens if it goes well?
- Worst realistic outcome: what happens if it goes badly?
- Fit with my values: score it from 1 to 5 against your top values.
- Who I become: what does an ordinary day look like two years in?
- Reversibility: is this a two-way door or a one-way door?
- What would need to be true: what has to hold for this option to work?
If one option keeps pulling at you while you write, pay attention to that too.
Common mistakes when making big decisions
- Letting the default decide. Not choosing keeps you on your current path — which is still a choice, just not one you made on purpose.
- Deciding in minutes something you'll live with for years. Match the time you spend to the stakes.
- Polling everyone you know. Advice is useful; a committee isn't. Two or three thoughtful people beat twenty opinions.
- Waiting for a perfect answer. Big decisions rarely have one. Aim for a well-made decision, not a guaranteed outcome.
- Treating every door as one-way. Many choices can be adjusted later. Overestimating how permanent a decision is makes hard decisions feel impossible.
Frequently asked questions
How long should I take to make a big life decision?
Long enough to work through the steps above without rushing — often a few days for reversible decisions and several weeks for ones that are hard to undo. Set a deadline so that "thinking it over" doesn't quietly become avoiding it.
Should I trust my gut or think it through?
Both have a role. Your gut is good at flagging that something feels off; deliberate thinking is better at weighing trade-offs. Notice your first reaction, then test it against your values and the worksheet.
What if I make the wrong decision?
Few decisions are truly permanent. Set a review point, watch the signals you chose in advance, and adjust if you need to. A careful decision that turns out imperfectly is easier to live with than one you drifted into.
How do I choose when both options are good?
Then you can't lose badly, and the stakes are lower than they feel. Use your top values as the tiebreaker, or choose the option that's easier to reverse and learn from it.
Who should I talk to before a big decision?
People who know you well and will ask good questions instead of pushing their own preference — and, ideally, someone who has lived with a similar choice.
Think it through with Dewen
Sometimes the hardest part of a big decision is getting it out of your head. Dewen is an AI life advisor that helps you lay out your options, weigh them against what matters to you and understand your own decision style — including through BaZi as a lens for self-understanding. The final call is always yours. Start a conversation.