Knowing When to Ignore Advice From People Who Aren’t Your Customers

Every founder hears advice. From friends. From investors. From mentors. From random people on LinkedIn who have never built a startup but love giving opinions.

Some advice is gold. Some is noise. And the hardest skill you can develop as a founder isn’t listening—it’s knowing when to ignore advice, especially when it doesn’t come from your customers.

The Danger of “Secondhand Wisdom”

Picture this: you’re building a tool for small business owners. A well-meaning friend in corporate finance tells you, “You should make it more complex—big companies need this too.”

Sounds smart, right? Except they’re not your customer. Your real users want simplicity, not layers of complexity. If you follow that advice, you’ll lose focus, bloat your product, and alienate the very people you’re trying to serve.

This is the trap of secondhand wisdom—ideas that sound clever but are disconnected from the realities of your market.

Why Non-Customer Advice Can Mislead You

Here’s why advice from non-customers is risky:

1. They don’t feel the pain.

Your product solves a problem. If someone doesn’t feel that problem, they can’t judge how urgent or valuable your solution is.

2. They imagine instead of experience.

Non-customers think about what they would want “if” they were in the situation. Customers don’t imagine—they live it.

3. They skew your priorities.

A single strong opinion from the wrong person can distract you from what real users are asking for.

Listen, Filter, Then Validate

That doesn’t mean you should shut your ears completely. Great ideas sometimes come from unexpected places. The key is knowing how to filter advice.

Here’s a simple framework:

• Listen politely. Every piece of feedback is data. Don’t get defensive.
• Ask: “Is this person my customer?” If no, mark it as “external opinion,” not “market feedback.”
• Validate with real users. Before you act, check if paying customers echo the same need or problem.

If your customer base confirms it, that advice might be worth acting on. If not, file it away and move on.

The Customer Compass

As a founder, your compass is simple: Does this help my customer win?

• If yes → worth exploring.
• If no → probably noise.

When Airbnb was starting out, investors told them “People will never stay in strangers’ homes. Focus on hotels.” If the founders had listened, they’d have killed their own idea. Instead, they doubled down on what customers wanted: cheaper stays, authentic experiences, and an alternative to hotels.

The customer compass pointed them in the right direction, even when experts said otherwise.

Building the Muscle of Discernment

Ignoring advice doesn’t mean arrogance. It means discernment.

• Arrogance says: “I don’t need anyone’s input.”
• Discernment says: “I’ll listen, but I’ll act only when it aligns with my customers.”

This muscle takes practice. Early on, you’ll be tempted to chase every shiny suggestion. But over time, you’ll learn the subtle difference between advice that helps you grow and advice that pulls you off track.

Final Thought

Startups don’t fail because founders don’t get enough advice. They fail because they act on the wrong advice.

Your real source of truth isn’t friends, mentors, or investors. It’s your customers. They’re the ones living the problem you’re solving. They’re the ones pulling out their wallets—or not.

So next time someone offers “brilliant” advice, pause and ask: Are they my customer?

If the answer is no, listen, thank them, and then—most of the time—ignore it.