Do founder habits work? 7 routines checked against research

This post started as one of those lists. Seven habits of successful founders, each with a confident statistic underneath: 80 per cent more productive, 88 per cent of millionaires, 40 per cent faster decisions.

Then we tried to find where each number came from. Some came from real studies that said something smaller. Some came from interviews that were never published anywhere a reviewer could check them. A few came from nowhere at all, repeated from one blog to the next until they looked like facts.

The habits themselves held up better than the numbers did. Here they are in order of how much evidence stands behind them.

Sleep has the strongest case

The claim usually goes that sleeping under six hours cuts your cognitive performance by 30 per cent. The best known study on the subject does not give a percentage. It gives something more unsettling.

In 2003, Van Dongen and colleagues kept 48 adults on six hours a night for two weeks. By the end, their deficits on attention and memory tasks matched those of people who had gone up to two full nights without sleep, and they did not realise how impaired they had become.

That last part is the useful one. Short sleep does not feel like a problem from the inside, which is exactly why it is worth protecting on a schedule rather than by how you feel.

Writing progress down works

The popular figure here is that people who write their goals down are 42 per cent more likely to reach them. It comes from a 2007 study by Gail Matthews at Dominican University of California. It was small, 149 people finished it, and it was presented at a conference rather than published in a journal. What it found was that people who wrote their goals down and sent a weekly progress note to a friend reached 76 per cent of them, against 43 per cent for people who only thought about theirs.

There is much stronger evidence for the same idea. A 2016 meta-analysis by Harkin and colleagues pooled 138 studies with almost 20,000 people and found that monitoring progress reliably helps people reach goals. The effect grew when progress was physically recorded or shared with someone else.

Twenty minutes of movement helps, a little

The claim is that 20 to 30 minutes of exercise before work speeds up decisions by 40 per cent. The direction is right and the size is not.

A 2012 meta-analysis by Chang and colleagues pooled 79 studies on the effect of a single bout of exercise on thinking. It found a small positive effect on cognitive performance afterwards, with the clearest benefit after about 20 minutes at moderate intensity. Small is the honest word. A walk before your first meeting will not make you a different person, but it is one of the few things on this list you can feel the same morning.

An evening stop protects the night

The claim is that switching off screens an hour before bed improves your problem solving the next day by 35 per cent. We could not find any study behind that number.

What does exist is evidence about the night itself. A 2025 Norwegian study of more than 45,000 young adults found that each extra hour of screen use in bed was linked to a 59 per cent higher risk of insomnia and about 24 fewer minutes of sleep. So the case for a shutdown routine runs through the habit above it: the evening stop matters because sleep does.

Three priorities and time blocks are practices, not findings

Two habits on the original list came with numbers we could not trace. Time blocking was said to make people 80 per cent more productive. The rule of three, picking three things that matter each day, came with no study at all.

Both are still sensible. Deciding when a task will happen, rather than only that it will, removes a small decision from every hour. Cal Newport makes the case for protected blocks of focused work in Deep Work, from his own experience. Try them for a month and judge them by your own record.

The 88 per cent

The most quoted statistic of all says that 88 per cent of self-made millionaires read for at least 30 minutes a day. It comes from Tom Corley's book Rich Habits, based on interviews he conducted with 233 wealthy people between 2004 and 2007. The answers were self-reported, the sample was his own, and the work was never peer reviewed.

It also has the problem we described in our post on survivorship bias. Asking rich people what they do tells you what rich people do. It says nothing about the people who read every day and did not get rich, because nobody interviewed them.

Reading is still worth it. It just does not need a made-up conversion rate.

What survives the check

Sleep enough, on purpose. Write down what you do and look at it. Move for twenty minutes when you can. Stop the evening early enough to protect the night. Everything else on the list is a reasonable experiment, and the only number that will tell you whether it works is the one in your own record.