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Ask people who've done it.

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I love my partner but I'm not sure we should get married

I love my partner but I'm not sure we should get married

Relationships
I have ten minutes to pitch someone who could completely change my business

I have ten minutes to pitch someone who could completely change my business

Business
I could pay off my car loan early or invest the cash instead, and I don't know which wins

I could pay off my car loan early or invest the cash instead, and I don't know which wins

Finance
A customer we thought was happy just told us they won't renew, and nothing in our data warned us

A customer we thought was happy just told us they won't renew, and nothing in our data warned us

GTM & Revenue
I mess up once at work and suddenly I feel completely worthless

I mess up once at work and suddenly I feel completely worthless

Self Esteem
My brother wants the house and I want to sell it, how do we split this fairly?

My brother wants the house and I want to sell it, how do we split this fairly?

Family

People worth learning from

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

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?

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

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?

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?

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I'm a solo founder and I honestly can't tell if I have product-market fit yet.

Top perspectives

Lenny Rachitsky

Writer of Lenny's Newsletter · Host of Lenny's Podcast · ex-Airbnb

Lenny's NewsletterLenny's PodcastAirbnb

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.

Julie Zhuo

Co-founder of Sundial · ex-VP Design at Facebook

The Making of a ManagerSundialFacebook

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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Lenny Rachitsky

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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