The advice "stop caring what other people think" gets repeated so often that nobody bothers to ask if it is actually possible, or what it would even mean if it were. The honest answer is that you cannot stop caring entirely, and you should not try. Caring about other people is part of being a person worth knowing. What you can do is lower the volume on the opinions that are eating your decision-making, without going cold on the people who actually matter.
The hidden cost of needing approval
If you are pricing your work below market because you do not want to seem greedy. If you are choosing the safer career path because your parents would worry. If you are avoiding posting on social because someone you know might roll their eyes. If you are choosing the cheaper restaurant because the friend you are with would judge ordering the steak. If you are not sending the message you want to send because the receiver might think less of you.
Each of these decisions on its own is small. The cumulative effect is enormous. You are running your life through 30 simultaneous filters of "what will they think", and the version of you that emerges from all those filters is much smaller than the version that was supposed to exist.
The cost is invisible because you never see the un-filtered version of yourself, only the one that survived everyone's hypothetical judgement.
The two groups of opinions
To lower the volume usefully, you have to separate the two groups of opinions in your life.
Group one - the people who love you and would be sad if specific outcomes happened. Your parents, your spouse, your closest friends. These opinions matter and you do not stop caring about them. You can disagree with them while still factoring them in. They are signal.
Group two - everyone else. Acquaintances, ex-coworkers, the social media circle of people who follow you for inertia reasons, that one cousin who comments on everything, the friend's friend you barely know. These opinions are noise. Most of them are not even thinking about you - they are thinking about themselves and projecting briefly onto you when they see your post.
Most people treat both groups as the same volume. That is the problem. The fix is not to stop caring about everyone. The fix is to stop weighting group two like it is group one.
The thought experiment that works
For any decision you are filtering through "what will people think", ask one question. If the people whose opinion I care about love me and accept me, and the people whose opinion I do not care about think whatever they want, do I still need to filter this decision?
The answer is usually no. The filter is mostly running on opinions that you would not weight if you noticed you were weighting them.
Some people will try to stop you, not out of hate, but out of fear. You are making them face their own limits.
The version that lasts
The shift is not to a cold, "I do not care what anyone thinks" persona. That version is usually performative and unstable. The lasting version is "I care deeply about a small number of opinions, and I have stopped pretending the rest are important".
This sounds the same but it is not. The first version is reactive - you are trying to prove you do not care, which means you still care. The second version is matter-of-fact - you have a small list of opinions you take seriously and the rest is background.
People who run on the second version are noticeable. They speak more freely. They make decisions faster. They do not perform agreement to keep social peace. They are also rarely cruel about it - they have nothing to prove.
How to actually lower the volume
Three moves, in order.
One - make the list. Write down the people whose opinions you actually take seriously. Five to ten names. Be honest. Most people have fewer than they think.
Two - audit your recent decisions. Where have you altered behaviour for someone not on the list? Notice it. Do not punish yourself for it. Just notice the pattern.
Three - run a small experiment. Pick one decision in the next 30 days where you would normally filter through opinions of people not on your list, and do not filter. Make the choice you would have made if those opinions did not exist. Observe what actually happens.
Usually what actually happens is nothing. The dire consequences you imagined were imagined. The people you were filtering for either did not notice or did not care. The proof accumulates that the filter was running on phantoms.
The exception that proves the rule
The one place this gets harder is family that loves you but also has strong opinions about what you should do. They are on your list - you do care about them - but their opinions are still in tension with your direction. The move here is not to dismiss them. It is to listen, acknowledge, and proceed anyway, with kindness.
"I hear you, I understand why you are worried, and I am going to do this anyway because of X." That sentence ends 80% of these conversations. The fight you are afraid of usually does not happen. The disappointment they will hold for a few days usually fades. The relationship survives most of these conversations far better than you expect.
For the broader mental architecture, read why your income is tied to your identity and how to handle toxic family when you are building something. The full mindset modules in the course walk through this layer in detail. Five names on the list. The rest goes quiet.