guillaumepessanha.com

Guillaume
Pessanha

Developer, Author & Systems Decoder.

Understanding and mastering our environment, from financial independence to human dynamics.

  • Author of 5 books
  • Official ambassador & founder of Guide Deblock
Portrait de Guillaume Pessanha
5books written
01

Finance & Web3

Taking control of your money, from stocks to crypto, without jargon or stress.

guide-deblock.com
Aperçu du site guide-deblock.com

Guide Deblock

Official Ambassador

Guide Deblock makes crypto, DeFi and Web3 accessible to everyone — no jargon. Tutorials, Crypto Academy and a community to move forward with confidence.

  • Understand Deblock step by step
  • Crypto Academy
  • DeFi made accessible
  • Up to 4% on your euros
Published book
La Bourse pour les ParesseuxGuillaume Pessanha
Back cover →
Published book
Guillaume Pessanhaguillaumepessanha.com

9 782000 000000

Published bookRetiring — July 2026

La Bourse pour les Paresseux

My first book on passive investing. Soon making way for Investing for the Lazy.

Book
Investing for the LazyGuillaume Pessanha
Back cover →
Book
Guillaume Pessanhaguillaumepessanha.com

9 782000 000000

BookJuly 2026

Investing for the Lazy

Coming soon.

02

Psychology & Relationships

Decoding what's at play within us and between us, for freer choices.

Front cover — Il elle pense quoi, là ?Back cover →
Book
Guillaume Pessanhaguillaumepessanha.com

9 782000 000000

BookJuly 2026

Il elle pense quoi, là ?

One book, two sides: understanding men AND women — no tricks, no nonsense.

Book
Stop Running from YourselfGuillaume Pessanha
Back cover →
Book
Guillaume Pessanhaguillaumepessanha.com

9 782000 000000

BookLate 2026

Stop Running from Yourself

Break free from self-sabotage without self-loathing: the 5 faces of the saboteur, and how to disarm yours.

03

Fiction

When decoding systems becomes a story.

Novel
The UnderstudyGuillaume Pessanha
Back cover →
Novel
Guillaume Pessanhaguillaumepessanha.com

9 782000 000000

Novel2nd half 2026

The Understudy

A psychological thriller about coercion and memory — an ending that makes you reread it all.

04

Web development

Sites and tools I design and build for the love of it — for people around me, the community, or just because the idea wouldn't wait.

Live
Website

ISB Muaythai Tahiti

Official website for the ISB Muay Thai gym in Tahiti.

05

About

Developer, investor, and author: I wear several hats, but have one single obsession — understanding how the systems that govern us work, whether financial, psychological, or relational.

My work is to deconstruct these complex mechanisms and make them simple, actionable, and useful. The goal is never theory for theory's sake: it's about giving everyone back control of their life, their money, and their relationships.

06·What they say

Their thoughts.

I knew nothing about the stock market. After two hours of reading, I understood ETFs, opened an investment account and automated my first deposits. Exactly what I needed.

Sophie M.

Reader — La Bourse pour les Paresseux

Guide Deblock helped me understand Deblock and crypto without drowning in jargon. The tutorials are clear, the community is great, and Guillaume actually replies.

Théo R.

Guide Deblock community member

It's rare to find someone who talks about finance, psychology and web development with such clarity. His content helped me take back control over several areas of my life.

Camille D.

Newsletter subscriber

07·Right now

What I'm working on.

Writing

4 books in progress — finance, psychology, relationships and fiction. Second half 2026.

Guide Deblock

The French-speaking crypto & Web3 community keeps growing. New content, tutorials and regular updates.

This site

guillaumepessanha.com is live and constantly evolving. You're on it — welcome.

08·FAQ

Frequently Asked Questions

Who is Guillaume Pessanha?

Guillaume Pessanha is a French-speaking author, web developer and investor. He has written several books on finance, psychology and fiction, and decodes complex systems to help everyone regain control of their life, money and relationships.

What books has Guillaume Pessanha written?

He is the author of books on finance ("Investing for the Lazy"), psychology and relationships ("Stop Running from Yourself", "Il elle pense quoi, là ?") and a novel ("The Understudy").

What is Guide Deblock?

Guide Deblock is an educational platform founded by Guillaume Pessanha to demystify crypto and Web3, with an active French-speaking community. It is accessible at guide-deblock.com.

Is Guillaume Pessanha a Deblock ambassador?

Yes. Guillaume Pessanha is an official Deblock ambassador and founder of Guide Deblock: he makes crypto and Web3 accessible and supports the French-speaking community around Deblock.

How can I connect with Guillaume Pessanha?

You can book a free 15-minute slot via the appointment button, subscribe to his newsletter, or contact him by email from the site guillaumepessanha.com.

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