Focus

Focus accelerates the accumulation of skills and accurate world models. In open-ended domains, such as writing, relationships, or business, there is nearly endless room for skill growth.

as Jeff always noted, you can make micro-adjustments in the long run to tweak the profit leaks. For some really large, heavy items, you can tack on shipping surcharges or just remove them from qualifying for Prime. These days, some items in Amazon are marked as "Add-on items" and you can only order them in conjunction with enough other items such... See more

What is impossible, however, is concentrating on two tasks at once. Multitasking forces your brain to switch back and forth very quickly from one task to another.

This wouldn’t be a big deal if the human brain could transition seamlessly from one job to the next, but it can’t. Multitasking forces you to pay a mental price each time you interrupt one... See more

Anyone can say no to crappy opportunities. Only a master will say no to good opportunities. If you don’t say no to good opportunities, you’ll never have the time to pursue great opportunities.

Saying no is hard. Nobody knew that better than Steve Jobs, who said:

People think focus means saying yes to the thing you’ve got to focus on. But that’s not

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startup founder: “our target audience is everyone” the product:

That, as a startup, you should only do half of what you want to do (only half the options, half the tabs, half the offerings, and half the target audience) to compound your chances of true PMF.