What's the biggest mistake you have made in your startup?

Question

I was wondering what are the biggest mistakes founders have made so maybe we can all learn from your experiences. I will start on two of my mistakes: 
1. Not preparing for my first launch 
2. Undermining marketing

Jim Morrison · Accepted Answer

Building a product, before I had an audience.  
Do. It. The. Other. Way. Around!

Janak Patel · Answer

Underestimating the time & efforts it takes to build an useful product

I'd like to add, also underestimated iterations required to make the products market ready

Rich Watson · Answer

networking, slow progress, finding committed contributors

Sven Radavics · Answer

Splitting my pre-seed raise into two stages in January.

Edgar · Answer

@sven_radavics Im naive to raising funds, why do you consider this a mistake?

Edgar · Answer

@janak_patel56 I completely agree, I initially thought I could do everything in 6 months. Here I am 2 years later still working towards that perfect product.

Edgar · Answer

@software_guy I made the same mistake when I started developing the product. I wish I took advantage earlier on

Sven Radavics · Answer

@edgar1 There's an old saying in startups "Raise money when you can, not when you need to".  In January the world was in an OK place...in February, Putin changed everything.  Fundraising is a lot harder now.

Edgar · Answer

@jimbomorrison Yeap I definitely did that as well

Janak Patel · Answer

@edgar1 yes

What's the biggest mistake you have made in your startup?

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