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Why Daily Reading Changes How You Think

Not a productivity pitch. What sustained reading actually does to attention, to perspective-taking, and to the way you handle an argument you disagree with.

By Taresh Sharan ยท PhD, IIT BHUโ€ขDecember 15, 2025โ€ข7 min read

There is a battered second-hand paperback on my shelf that I bought for almost nothing in a Bangalore market years ago, entirely by accident, because the cover looked interesting and I had ten minutes to kill. I have read it three times since. I could not have predicted that. Nobody can.

That is the strange thing about reading. You pick up a book for trivial reasons and occasionally walk away carrying something that quietly rearranges how you see a part of the world.

I have been a daily reader since my late teens. I am not going to tell you that this made me smarter, because I do not think that is the right claim, and I would have no way to demonstrate it. What I will say is narrower and, I think, more defensible: people who read steadily tend to be better at holding two contradictory ideas at once, better at imagining how a situation looks from inside someone else's head, and more comfortable sitting in uncertainty instead of grabbing the first available resolution. Those are not mystical outcomes. They are what you would expect from spending a lot of hours doing exactly that.

What reading asks of you that other media does not

I want to be specific here, because the generic "reading is good for you" pitch has been repeated until it sounds like a vitamin advertisement.

Long-form text makes you generate almost everything yourself. A podcast gives you the words and the tone. A film gives you the faces, the rooms, the light. A book gives you marks on a page and asks you to build the rest: what the room smells like, what the silence between two lines means, whether the narrator is being straight with you. That construction work is the whole point. It is also why reading is more tiring than watching, and why people who have stopped reading often describe the first few weeks back as physically difficult.

The other thing a book demands is duration. You have to hold a character's motives from chapter three while reading chapter eleven. You have to follow an argument through its complications without the author restating the thesis every ninety seconds. Very little else in modern life trains sustained attention on a single thread for an hour at a time.

The empathy question, honestly

There is a well-known set of experiments published in Science in which reading literary fiction produced short-term improvements on tests of theory of mind โ€” the ability to infer what another person is thinking or feeling โ€” compared with reading nonfiction or popular fiction. It is a genuinely interesting result and it gets quoted constantly.

It should be quoted with a caveat. Later attempts to reproduce the effect have had mixed results, the effects measured were small and immediate rather than lasting, and "literary fiction makes you kinder" is a much bigger claim than anything the data supports. What I take from it is modest: reading fiction is practice at inhabiting a perspective that is not yours, and practice tends to do something. Whether it makes you a better person is beyond what any study of this kind can settle.

For non-fiction the effect is different and easier to observe in yourself. Following a sustained argument across two hundred pages builds a tolerance for not concluding yet. You start noticing when evidence is thin, when an author has quietly swapped a strong claim for a weak one, when a conclusion does not actually follow from the chapter that preceded it. That transfers directly to reading anything else โ€” a news story, a research paper, a pitch deck.

The part nobody mentions: reading changes what you can write

I write, for work and otherwise, and the clearest benefit I can point to is not knowledge. It is ear.

You absorb sentence rhythm without trying. After enough good prose, a bad sentence starts to feel wrong before you can explain why it is wrong. You develop an instinct for when a paragraph is carrying too much, when a transition is missing, when a piece of writing is hedging because the writer has not decided what they think. None of this is teachable in the direct way that grammar is teachable. It is absorbed, slowly, by exposure.

The corollary is uncomfortable: if you mostly read thin writing, you will mostly write thin writing. The input sets the ceiling.

What to read when you are starting from nothing

This is harder than it looks, and the standard answer is wrong. Start with the classics, build a proper foundation, work through the canon โ€” that advice has killed more reading habits than it has started. A difficult book read out of obligation teaches you that reading is an obligation.

Start instead with something you actually want to know about. If money is the curiosity, Morgan Housel's The Psychology of Money is short and written like someone explaining something to a friend. If it is history at enormous scale, Yuval Noah Harari's Sapiens covers vast territory at a pace that does not lose you โ€” not because it is beyond criticism, it is not, but because it moves.

For fiction, pick a voice that pulls you rather than a reputation that impresses you. Amitav Ghosh's The Shadow Lines if you want literary fiction that is also gripping. R.K. Narayan's Malgudi Days if you want something warm and unhurried that asks nothing of you. A good thriller if a good thriller is what you actually want. Match the book to your real mood, not to someone else's idea of what your shelf should look like.

And abandon books freely. I used to feel obliged to finish everything I started, which meant getting stuck in something I was not enjoying and then not reading at all rather than admitting defeat. Fifty pages is enough of a trial. The stack is too tall and the years are too few.

The long game

I cannot tell you precisely what changed in me through a decade of daily reading, because the changes are too distributed and too tangled up with everything else that happened in that decade. What I can do is point at specific moments.

A chapter of Daniel Kahneman's Thinking, Fast and Slow explained a category of bad decision I kept making at work, and I recognised myself in it immediately and uncomfortably. Kazuo Ishiguro's The Remains of the Day shifted how I think about professional loyalty and what it can cost, though it took another two years for that to fully surface. A book on photographic composition gave me a way of seeing frames that I still use every time I pick up a camera.

None of those were outcomes I could have anticipated when I picked the books up. That is the actual argument for reading daily. It is a long-term investment in your own thinking with genuinely uncertain returns, most of which arrive late and sideways, and almost none of which show up in any metric you could put on a dashboard.

Twenty minutes. Something you actually want to read. Put it down if it stops working. Read again tomorrow.

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Taresh Sharan

About the Author

S

Taresh Sharan

PhD ยท IIT BHU

Research Scientist ยท Bangalore, India

PhD in Biomedical Engineering from IIT (BHU) Varanasi. Research Scientist based in Bangalore. Author of 200+ articles across AI, finance, photography, technical writing, careers, literature, and corporate ethics. Builder of the free Money and Health apps on this site.

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