Your customer walks you through their plan, and you know it won't get them anywhere. You have two options. Either you nod along and show them how to do "more of the same", or you calmly tell them you disagree. Most CSMs choose the first, for fear of damaging the relationship. And the exact opposite happens. Here's why challenging your customers is the only way to become the trusted advisor they're really looking for.

Customer Success Managers are constantly told they need to become "trusted advisors". The phrase is everywhere, from job descriptions to conferences to annual objectives. But in practice, the role almost always drifts towards something else: a facilitator who supports, unblocks and shows the right features at the right time. Useful, but interchangeable. A true trusted advisor does one thing a facilitator never does: they dare to disagree with their customer. And no, that isn't a flaw in your approach. It's the heart of the job.

The well-meaning facilitator is a trap

Let's look at what happens when you never challenge your customer. You become very good at doing what they ask. They want to switch on a feature, you help. They want to roll out a plan, you support them. You're pleasant, available and responsive. Everyone's happy. On the surface.

The trouble is, that comfort comes at a price. By simply showing customers how to do "more of the same", you condemn yourself to one of two outcomes. The first: you become a demo delivery service, a very expensive version of a help centre. Your company pays a full salary for value that a product tutorial could deliver. The second is worse for the customer: if they carry on down a shaky path and nobody warns them, they won't get the results they expect. And a customer who doesn't get results eventually leaves. Not straight away. But they leave.

That's the paradox of customer relationships: if you try too hard to please, you stop being useful. Your value doesn't come from your ability to say yes. It comes from your ability to see what the customer can't, and to say so. A CSM who never takes a stand doesn't have a point of view, they have a support role in disguise. That's also why you can argue that Customer Success isn't just a defensive function: your role isn't to cushion the blows, it's to move things forward.

Why disagreement strengthens the relationship (and not the other way round)

The belief to unpick: disagreeing is supposedly dangerous for the relationship. Many CSMs are convinced of it, and their ego doesn't argue, because saying yes is more comfortable. But the belief is wrong.

Debating the merits of two ideas is what makes them stronger. That's precisely why peer review exists in science: an idea that's put to the test becomes more robust than one that's accepted without question. Why would your customer relationships work any differently?

There's a second effect, which is even more counter-intuitive. Disagreement, when it's handled well, deepens the relationship rather than damaging it. When you genuinely challenge a customer's idea, you send a signal that a simple "yes" never will: you're invested enough in their success to risk contradicting them. You move beyond surface-level conversation. You show that you're playing their game, not yours. That's where trust is really built.

A word of caution, though. Everything hinges on "handled well". Disagreement thrown in without method is just a CSM who looks like they think they know better than the customer. That damages the relationship for good. The difference between a trusted advisor and a lecturer comes down to one thing: productive disagreement.

The 5 steps to productive disagreement

Here's how to challenge a customer without ever losing their trust. This sequence turns a potentially tense moment into an active discussion, the kind the customer leaves having genuinely thought things through.

Align on the goal first

This is the step that decides everything. Until you're aligned on the outcome the customer wants to achieve, no disagreement can end well. You're arguing about the route without agreeing on the destination.

So take the time, properly, to understand what they're aiming for. As a company, as a team and as an individual. That last point matters more than you might think: the person in front of you also has personal goals, perhaps a promotion in mind or credibility to protect internally. Once you can tie every disagreement back to THEIR goal, they become far more open to being challenged. You're no longer attacking them, you're helping them get what they want. That's also what separates a CSM who simply sits through their meetings from one who knows how to deliver value throughout the customer journey.

Acknowledge what deserves it

Before pointing out what's wrong, tell the customer what's good about their idea. Where are its real strengths? Be honest and specific. This step isn't a courtesy, and it mustn't become one. If you fake it, the customer will notice, and you'll get the opposite effect: a forced compliment that sounds condescending and chips away at trust before you've even raised your objection.

So no automatic "that's a great idea, but...". Look sincerely for what holds up in their proposal, and name it.

Shine a light on the blind spots

Now tell them where their idea risks falling short of the original goal. Not "that won't work", but "here's where I see a risk". Be frank about the obstacles they might run into along the way.

Above all, use examples. Experience speaks far louder than opinion. "From what we've seen with customers who went down this route..." carries far more weight than "I think...". That's the whole logic of a confident stance: you don't justify yourself, you demonstrate, based on facts and real cases.

Suggest an alternative

This is where you show your value. Disagreement that stops at "I don't agree" goes nowhere. A trusted advisor doesn't just take things apart, they rebuild.

So share your view: here's how, in your opinion, the customer can reach their goal. Stress the benefits of your approach, and above all how it defuses the risks you've just identified. You're not saying "you're wrong". You're saying "what if we did it this way, to avoid exactly the wall we just talked about?"

Hand the conversation back

Finally, don't close the discussion on your own conclusion. Ask for feedback. "Do you think this could work for your team? What obstacles do you see with this approach?"

This last step changes everything. It turns your disagreement into a dialogue. The customer is no longer someone having a vision imposed on them, but someone you're building it with. A disagreement that ends with an open question is no longer a disagreement, it's thinking things through together. And that's exactly what sticks in their mind after the meeting.

What it changes in your meetings

This approach comes into its own in high-stakes moments: the Business Review, renewal discussions, roadmap decisions on the customer's side. These are the meetings where the well-meaning facilitator rubber-stamps, and the trusted advisor challenges.

Let's take a concrete example. A customer tells you they want to roll your tool out across their entire organisation in one go, 300 users, to "move fast". The facilitator plans the roll-out. The trusted advisor first aligns on the goal, acknowledges the ambition, then highlights the risk (a big bang with no internal champions that ends in phantom adoption), suggests an alternative (a pilot with two motivated teams before expanding) and hands the conversation back. Same customer, same topic, two radically different relationships at the end of it.

The difference isn't one of style. It's one of value. The first carries out a request, the second protects an outcome. And it's that second reflex customers expect from you, even when they don't say so.

Conclusion

You don't become a trusted advisor because a job description says so. You build it in every meeting where you could have nodded along and chose instead to challenge, with method. Productive disagreement isn't the opposite of a good customer relationship; it's its most mature form.

If you remember one thing: a customer who has never been contradicted doesn't have an advisor, they have someone who takes orders. Trust doesn't come from "yes". It comes from your ability to say "hang on, I'm not sure this is the right way, and here's why". Go for it!

Need to scale your Customer Success?

Meet Skalin, the next-generation Customer Success platform that makes teams more productive with AI

How do you become the trusted advisor your customers are looking for?