JUSTIN MARCHI
SELF-DEVELOPMENT

What I read, use, and share

The gap between where you are and where you want to be is mostly clarity, skill, and reps. These are the resources I come back to, the ones that shaped how I think, build, and keep moving. Take what's useful.

A working desk with notes, charts, and a laptop
Books · Operating & strategy
STRATEGY
Good Strategy / Bad Strategy
Richard Rumelt

The clearest take on what strategy actually is, and why most "strategy" is just goals with no plan. Pairs perfectly with how I frame a roadmap.

OPERATIONS
The Goal
Eliyahu Goldratt

A novel that teaches the theory of constraints better than any textbook. Find the bottleneck, everything else is noise.

EXECUTION
The Effective Executive
Peter Drucker

Decades old and still the standard on doing the few things that matter. Effectiveness over busyness.

CHANGE
Switch
Chip & Dan Heath

Why change is hard and how to make it stick. The whole book is really about adoption, the part everyone underrates.

GOALS
Measure What Matters
John Doerr

The OKR playbook. A clean system for turning a strategy into outcomes a team can actually run against.

BUILDING
The Lean Startup
Eric Ries

Speed to a usable thing, then learn. The mindset behind shipping a working artifact instead of a slide about one.

Books · Mindset & growth
HABITS
Atomic Habits
James Clear

Small, repeatable systems beat motivation every time. The operating manual for "earn it" applied to yourself.

FOCUS
Deep Work
Cal Newport

The case for protecting the kind of focus that actually produces value, in a world built to fragment it.

RESILIENCE
The Obstacle Is the Way
Ryan Holiday

Stoicism for operators. Perseverance isn’t grinding harder, it’s turning the obstacle into the path.

GROWTH
Mindset
Carol Dweck

The research behind why "I can’t do this" should always end in "…yet." Foundational for anyone betting on growth.

MANIFESTING
Think and Grow Rich
Napoleon Hill

Dated in places, but the core holds: clarity of desire plus relentless action. The original manifest-it-then-build-it text.

AI & THE FUTURE
Co-Intelligence
Ethan Mollick

The most practical book on actually working with AI, not the hype, the daily reality. Required reading right now.

Tools · What I build and think with
AI ASSISTANT
Claude

My primary thinking and building partner, especially for structure, analysis, and long documents.

claude.ai →
AI ASSISTANT
ChatGPT

The other workhorse. Different strengths, worth having both in the rotation.

chatgpt.com →
BUILD
Replit

Where ideas become working apps fast. The build stack behind most of my prototypes.

replit.com →
RESEARCH AGENT
Manus

I point it at a question and let it run, gathering and organizing the landscape before I form a view.

manus.im →
VALIDATION
Grok

Where I pressure-test a take against a different model before I commit to it.

grok.com →
TASK AGENT
Perplexity

My go-to for quick, sourced answers and fast lookups while I work.

perplexity.ai →
CONNECTIONS
Zapier

The connective tissue between the tools, automating the handoffs so the stack works as one.

zapier.com →
Frameworks & mental models
MY FRAMEWORK
Make It Make Sense

Map, Interpret, Mobilize, Sustain. My method for turning complexity into change that actually holds.

MY FRAMEWORK
Make AI Make Sense

Map, Assess, Implement, Measure, Scale. The same discipline applied to AI adoption, with adoption over deployment as the rule.

OPERATING TOOLKIT
SIPOC, RACI & root cause

The plain-language operating tools I reach for constantly: map the process, fix ownership, and find the real cause before you fix anything.

THINKING
First-principles thinking

Strip a problem back to what’s actually true, then rebuild. The fastest way out of "we’ve always done it this way."

CONSTRAINTS
Theory of constraints

Every system has one bottleneck that sets the pace. Find it, fix it, then find the next one. Everything else is motion without progress.

DECISION-MAKING
Mental models (Farnam Street)

A library of thinking tools worth knowing, inversion, second-order effects, opportunity cost, and more.

Voices & listening
PODCAST
Lenny's Podcast

Product, growth, and operating wisdom from people who’ve actually built. Practical, not theoretical.

PODCAST
Acquired

Deep, well-told breakdowns of how great companies were actually built. Strategy you can feel.

PODCAST
Masters of Scale

How operators take an idea from zero to scale, the decisions, the inflection points, and the people behind them.

PRACTICES

Habits that compound

Resources are inputs. These are the repeatable practices that turn them into progress, the operating rhythm I run on myself.

Weekly review

One honest hour: what moved, what stalled, what’s next. The single highest-leverage habit I keep.

Write to think

If I can’t write it clearly, I don’t understand it yet. Writing is how the fog clears.

Ship something small, often

Momentum beats perfection. A small finished thing teaches more than a big unfinished one.

Want the version pointed at your situation?

General resources are a start. If you want the right ones for your specific problem, that's a conversation.

Let's talk