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March 13, 2025 I recently interviewed over 25 founders with a common question.

“What’s the biggest lesson you’ve learned?"

Their answers were honest. Brutal. Game-changing.


The responses revealed 6 key lessons that every founder should know.

Lesson 1 -  Time is the real currency

"Everyone has the same wallet. It has 24 hours in it." - a great quote by one of the founders.

The best founders guard their time aggressively.
They say NO more often than they say yes.
They focus on high-impact tasks.

Lesson 2 - Hiring right is 90% of the game

"Your employees walk out the door every night. You better give them a reason to come back."

Great hires align with the mission, not just the paycheck.
Hire slow, fire fast.
Culture matters more than resumes.

Lesson 3 - Start before you feel ready

"You will NEVER have all the answers. Just start."

You will never have all the answers. It’s fine. You will learn on the go.
The biggest startup killer initially? Overthinking and perfectionism.
The best founders iterate constantly.

Lesson 4 - Failure isn’t the end, it’s the beginning

"Most startups don’t fail because of bad ideas. They fail because people give up."

Every successful founder has had moments of wanting to give up.
Most startups fail because people give up too early.
Resilience is what will get you through the tough times. Push through.

Lesson 5 - Play the long game

"Short-term thinking kills more startups than bad ideas."

Overnight success is a myth. It takes time. So be patient.
Invest in long-term growth, not just quick wins. You will eventually lose if you focus on quick wins.
The best companies reinvest in their business.

Lesson 6 - Your startup isn’t your identity

"I used to think ‘founder’ was my whole personality. It’s not."

Burnout is real and can take a toll on you.
There is life beyond your startup. Maintain important relationships always no matter what.
Balance is extremely important. Balance means working smarter, not less.

What’s the best lesson YOU’VE learned as a founder?

8 Comments

  1. 1

    Lesson 4 really hit home; most startups don’t fail because of bad ideas, but because people give up too early. As Paul Graham says, determination is often the key differentiator between success and failure; not just intelligence. Bill Clerico (WePay) pushed through endless negotiations that would have made most founders quit; that persistence paid off.

    I learned this firsthand when I was deep into a marketing campaign that seemed like a total failure at first. We spent weeks testing different angles; burning budget; getting nowhere. Most people would have scrapped it, but we kept iterating. Then, one small tweak; changing how we framed the offer—turned everything around. That campaign ended up being one of the best performers.

    Your post is a great reminder that resilience is everything in this game. Curious; what’s been the toughest ‘push through’ moment in your journey so far?

    1. 1

      Thanks for sharing your experience through your marketing campaign. It really is the small tweaks that create big changes.

      There have been so many tough moments where we have to "push through" but at the end of the day, you look at your business, what's your mission, is it something you are enjoying? Do you see the impact and then the low days and tough times are forgotten for a while!

  2. 1

    Great post, resonates well! I think also: know your customer(s) early, when you are ready to ship is just too late..

  3. 1

    These lessons hit hard, especially the one about time being the real currency. It is crazy how easy it is to get caught up in low-impact tasks. Curious did any of the founders share specific strategies for protecting their time

    1. 1

      Yes, we often forget how important our time is! One of the founders did share his time blocking technique on his calendar for specific tasks which really is a great tool to be organised and focus.

  4. 0

    This comment was deleted a year ago

    1. 1

      Absolutely. No is such an important word and helps you focus on things that are important for you.

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We started StarterSky to provide young founders a voice, to showcase their journey, give them visibility, and to be part of a community where founders can learn from one another.