Find people who've been there
Describe your situation. Get their perspective.
Have knowledge to share? Create a digital version of yourself others can ask questions.
Ask people who've done it.
Ask a quick question
I love my partner but I'm not sure we should get married
I have ten minutes to pitch someone who could completely change my business
I could pay off my car loan early or invest the cash instead, and I don't know which wins
A customer we thought was happy just told us they won't renew, and nothing in our data warned us
I mess up once at work and suddenly I feel completely worthless
My brother wants the house and I want to sell it, how do we split this fairly?
People worth learning from
Nir on why we reach for our phones without deciding to“Your brain has learned that opening social media relieves a quick pang of boredom, loneliness, or uncertainty, so it now cues the habit before you consciously decide.”
Lorraine on getting noticed for your work“Doing great work doesn’t guarantee recognition. Make your impact easy to explain so people can advocate for you when you’re not in the room.”
Guillermo on building Vercel and Next.js“The best things we've done for our brand is the things that we did without thinking we're working on our brand.”
Vanessa on sexual expectations couples never say out loud“I don't believe in a universal normal for any stage, but I do think it's completely natural for that early honeymoon frequency to taper off after about a year.”
Vinod on which jobs AI will replaceLed KV's first OpenAI investment and juniper Networks: 2,500x return.
Dave on B2B marketing that creates pipelineDrove Drift to $1B valuation and grew Exit Five to 4,000 members.
Kit on cutting a huge to-do list to three big things“I used to write forty-item lists and call it ambition, but it was just avoidance dressed as hard work.”
Nir on the science of living longer“To delay the biology of aging, we don't prevent just one disease, we prevent many of them. We used to think each age-related disease was separate, but they share common roots. Longevity becomes a side effect of staying healthy longer.”
Jim on enjoying competition when teammates are more intense“I stopped enjoying baseball when I was chasing what everyone else valued, and I found my game again only when I started competing to raise my own level, not to beat theirs.”
Jason on when to keep fighting and when to wind down“I’ve seen this movie too many times: four months of runway with flat sales usually means the founder never found a repeatable motion, not that the market said no.”
Pedro on where machine learning is headed“The same basic paradigms have been used since the 1950s. At the end of the day, we’re going to need some new ideas.”
Alastair on handling a teammate who undermines you in meetings“I would name the pattern in private first: I noticed you agreed in the room, then raised concerns afterwards. If you disagree, raise it in the meeting so we can deal with it straight away.”
Keith on spotting founders nobody has noticed yet“Stop looking at résumés the way Google does.”
Matthew on finding the right partner“You want to be happy enough that the right thing doesn’t become your everything.”
Peter on which AI tools are worth paying forLed product teams at Meta, Amazon, Roblox and publishes Behind the Craft episodes.
Guy on keeping customers from churningSold Brightback to Chargebee and CMO at Chargebee.
Tiago on turning knowledge into action“Saving information isn’t the goal. Organize it around what you’re trying to accomplish, so the ideas you collect become things you actually create.”
Nick on metabolic health, nutrition, and brain healthCarnivore IBD case series, Frontiers in Nutrition and harvard MD, Oxford PhD, Dartmouth valedictorian.
Moses on making it to the top when you started with nothing“I had love for the game, parents who kept me grounded, and a city that taught me how to compete. What kept me going was consistency and curiosity. You control what you can control, stack good days, and let the game reward you when it's time.”
Alisa on growing from founder to CEO“The habits that made you a successful founder can become your biggest obstacles as CEO. Growth starts with seeing how others experience you.”
Real Life Situations
My ex texts me about our son's schedule and within seconds I'm furious and typing back something sharp. I've sent messages I regretted an hour later more times than I can count. I want a second between the trigger and my reply, not just my temper doing the talking
I've played soccer for eight years, all through school. Practice is three nights a week now and I dread every one of them. My parents keep saying I'll regret quitting senior year. Do I owe this sport anything at this point?
Three people from my building went to a birthday dinner last week and I found out from a photo. This is the fourth time this year. I'm starting to think there's something about me people don't want around
My mom got lost driving home from the grocery store last week, three miles from the house she's lived in for forty years. She still insists she's fine and gets defensive the second I bring up her memory. My siblings think I'm overreacting, but I found the stove left on twice this month. How do I get her to see what I'm seeing?
More on Delphi
The experience of one life should help another.
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Top perspectives
Top perspectivesWriter of Lenny's Newsletter · Host of Lenny's Podcast · ex-Airbnb
“The honest answer: if you're not sure, you probably don't have it yet. When you truly have product-market fit, people are fighting to get in. You're not questioning it.”
Co-founder of Sundial · ex-VP Design at Facebook
“The clearest signal is retention: are the people who try your product coming back without you having to push them? If they are, you likely have product-market fit for a segment. If they aren't, the rest is noise.”
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Their Delphi, answering in their voice
I'm a solo founder and I honestly can't tell if I have product-market fit yet.
If you're not sure, you probably don't have it yet. When you do, people are fighting to get in. Start with the Sean Ellis “very disappointed” survey and look hard at retention. Those two give you the clearest read.
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