30 Mistakes I Learned Building 8 Brands

Over the years, I’ve had the opportunity to build and work on multiple brands across e-commerce, B2B, and retail. Along the way, I made many mistakes — some small, some expensive, and some that completely changed how I think about building a business.

Instead of pretending the path was smooth, I decided to write about the mistakes. Because the truth is, most of the real learning in business doesn’t come from what works. It comes from what doesn’t.

This series isn’t a guide from someone who “figured it all out.” It’s a reflection from someone who kept building, kept adjusting, and kept learning through experience.

Here are the 30 mistakes that shaped how I build today.

The 30 Mistakes

1. Thinking you’ll get everything right the first time

2. Trying to make everything perfect before launching

3. Buying too much inventory before testing demand

4. Watching competitors instead of understanding customers

5. Buying services before you even understand your own product or data

6. Ignoring the power of marketing early on

7. Not knowing the shortcuts you’re taking — and why

8. Letting the business disturb your life instead of structuring it

9. Choosing the wrong partners

10. Not reevaluating your business regularly

11. Not reviewing your products consistently

12. Not understanding the marketplace you’re selling into

13. Listening to everyone without filtering advice through your own understanding

14. Waiting too long to make decisions

15. Assuming growth will fix structural problems

16. Thinking every product has to be for everyone

17. Believing DTC automatically means easy margins

18. Trying to fill a product line instead of launching different products and seeing what works

19. Trusting “industry experts” without proof

20. Ignoring packaging functionality

21. Hiring before you have systems — and not constantly refining those systems

22. Waiting too long to build relationships

23. Manufacturing before properly validating demand

24. Not planning for returns, defects, and damages — and not tracking them as KPIs

25. Ignoring compliance until it’s too late (or over-complying too early)

26. Thinking DTC is cheap

27. Assuming Amazon will push your product

28. Building products based on your preferences instead of customer behavior

29. Pricing emotionally instead of strategically

30. Not knowing why your brand should exist

What I Really Learned

Looking back, the biggest lesson isn’t any single mistake.

It’s that building brands is a process of constant iteration.

You launch.You learn.You adjust.You relaunch.

Sometimes a product works immediately.Sometimes it takes three launches before it finally lines up with the market.

Sometimes you discover the real value of a brand is simply improving the customer experience in a small but meaningful way.

Passion Is Important — But Data Matters

Passion is what gets founders started. It’s what pushes you through long days and difficult decisions.

But passion alone isn’t enough.

You can believe deeply in a product — and still need to adjust it. That’s why data matters. Customer behavior tells you what’s really working.

Passion starts the journey.Data decides the direction.

The Work Never Really Ends

Even today, I’m still learning. Every product launch, every channel, and every new partnership teaches something different.

I don’t expect to get everything right the first time anymore.

I expect to test, refine, and improve.

That mindset alone has probably saved more time and money than anything else.

💡 Founder’s Reflection (Mayer):Building brands isn’t about avoiding mistakes — it’s about learning fast enough that mistakes become progress. Every product, every launch, and every challenge adds another layer of understanding. The goal isn’t perfection. The goal is building something better each time.