The 90-Day Playbook I Give Every Founder I Advise

When a founder brings me on as an advisor, the first thing I do is resist the urge to fix things. That might sound strange for someone whose job is to help, but I've learned that the most valuable thing I can do in the first 90 days is listen, diagnose, and build a framework — not prescribe solutions to problems I don't yet fully understand.

Over years of advising early and growth-stage SaaS companies, I've developed a 90-day playbook that I walk every founder through. It's the same framework regardless of stage, industry, or team size. Here's exactly what it looks like.

Days 1 to 30: The Listening Phase

The first month is entirely about understanding the business from the inside. I do four things in this phase, and I resist doing anything else.

First, I sit in on sales calls. Not to coach — just to listen. I want to hear how the founder talks about the product, how prospects respond, what questions come up repeatedly, and where deals stall. You can learn more about a business from five sales calls than from five board decks.

Second, I interview the team. Short, informal conversations with every department head and a few individual contributors. I ask three questions: What's working well? What's broken? If you could change one thing tomorrow, what would it be? The patterns that emerge from these conversations are remarkably consistent and almost always point to the real bottleneck.

Third, I review the numbers — not just the headline metrics, but the cohort data. How do different customer segments behave? What does the retention curve look like at 3, 6, and 12 months? Where are the unit economics strong and where are they weak? The numbers tell you what's actually happening, as opposed to what people believe is happening.

Fourth, I talk to customers. Five to ten calls with customers across different segments — happy ones, unhappy ones, recent ones, longtime ones. I want to understand why they bought, whether they're getting value, and what would make them leave. This is the most overlooked source of strategic insight in most companies.

Days 31 to 60: The Diagnosis Phase

By day 30, I have enough information to identify the one or two things that, if fixed, would have the biggest impact on the business. Not five things. Not ten. One or two.

This is the hardest part of advising, because founders usually have a list of 20 problems they want to solve simultaneously. My job is to help them see which of those 20 problems is the root cause and which are symptoms. Fix the root cause and half the symptoms resolve on their own.

In my experience, the root cause falls into one of three categories about 90% of the time. Either the company has a positioning problem — they're selling to the wrong customer or describing their value incorrectly. Or they have an operational bottleneck — usually in onboarding or customer success — that's capping their growth. Or they have a leadership gap — a key role that's either unfilled or filled by the wrong person.

During this phase, I work with the founder to build a diagnosis document. Not a strategy deck — a clear, honest assessment of what's working, what's not, and what we believe the root cause is. This document becomes the foundation for everything that follows.

Days 61 to 90: The Action Phase

The final 30 days is about implementing the first high-impact change. Not a complete overhaul — one targeted intervention that we can execute, measure, and learn from in 30 days.

If the diagnosis pointed to positioning, we might rewrite the messaging, rebuild the sales deck, and test it on 10 prospects. If the bottleneck is onboarding, we might design a structured 30-day onboarding program and pilot it with five new customers. If the gap is leadership, we might define the role, start the search, and put an interim plan in place.

The goal isn't to solve everything in 90 days. The goal is to demonstrate that systematic diagnosis leads to effective action, and to build the muscle of identifying problems, forming hypotheses, testing solutions, and measuring results. That muscle is what separates companies that keep growing from companies that plateau.

Why This Framework Works

Most advisory relationships fail because the advisor shows up, gives opinions based on pattern matching from their own experience, and the founder either follows advice that doesn't fit their context or ignores it entirely. Both outcomes waste everyone's time.

This framework works because it forces me to understand before prescribing. It forces the founder to confront the data rather than relying on instinct. And it creates a shared understanding of reality that makes every subsequent conversation more productive.

By day 90, the founder and I are speaking the same language. We've looked at the same data, heard from the same customers, and agreed on the same diagnosis. That alignment is worth more than any piece of advice I could give on day one.

The Meta-Lesson

The real value of this playbook isn't the specific actions — it's the discipline of slowing down to understand before acting. Founders are biased toward action. That's what makes them great. But the founders who build lasting companies know when to pause, listen, and diagnose before reaching for solutions.

Every time I've rushed to fix something without fully understanding it, I've made the situation worse. Every time I've invested the time to diagnose properly, the solution has been clearer and the execution has been faster. The 90-day framework is just a structured way of doing what great operators do naturally.

If you're building a SaaS company and want a partner who's been in your shoes, let's talk. Book a call at cal.com/christopher-thierry/30min