“Everything’s a Prototype.”


Sarah Harrison

I’m a designer, strategist, and co-founder of The Determined in San Francisco.

I teach business owners to prototype & test everything from finding the right product-market fit to nailing their messaging & branding.

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Your DIY guide to making everything from your website to your marketing awesome, from the visuals to the messaging strategy.

Writing the content for your business is often a struggle, but with this guide you’ll quickly learn to kick ass at it.

This guide helps you prototype & test everything about your online business so you know you’re getting the most bang for your buck.


“Sarah Harrison is brilliant and she has helped to sculpt my ideas for my business into something that is actually manageable, doable, and successful.”.

Rachel Capurso / Aeolian Heart