Unlike anything I have read in the personal development space. 4.8 from 100 readers →
CurtTOMLINSON

Book One · Memoir

The interesting work is not behind you.

You built something real — a career, a company, a reputation, a family. This is the book about what you build next.

4.8 average from 100 readers  ·  eBook, paperback, hardcover  ·  secure checkout

From Boardroom to Seabed by Curt Tomlinson — book cover

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Two books, each in three formats — your choice of reading — and a companion workbook for each. Pick one, add it to the cart, and check out securely.

From Boardroom to Seabed by Curt Tomlinson — book cover
Book One

From Boardroom to Seabed

Same book, three ways to read it. Pick a format, add it to the cart, and check out securely.

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Paperback $12.99 296 pages, 6×9. Ships from the store.
Hardcover $22.99 The keeping copy. Ships from the store.
You Do Not Have an Expiration Date by Curt Tomlinson — book cover
Book Two

You Do Not Have an Expiration Date

Reinvention, purpose, and the case for your best years being ahead. The eBook is ready now; the print editions are on press.

eBook Delivered instantly. Kindle, iPad, phone, or laptop.
Paperback 6×9 print edition. At the printer now.
Available the day the print run is finished.
Hardcover The keeping copy. At the printer now.
Available the day the print run is finished.
The Second Chapter Blueprint Workbook cover
Companion · Book One

The Blueprint Workbook

Printable PDF. The five principles, the six-step blueprint, and the ninety-day plan as prompts you fill in by hand.

Get the workbook Instant download on Gumroad.
The Expiration Date Workbook cover
Companion · Book Two

The Expiration Date Workbook

Printable PDF, 70 pages. Thirty-six chapter practices, the 30-Day Challenge, the Second-Chapter Self-Audit, the Mentor’s Playbook and the Book Club Guide, rebuilt as pages you fill in by hand.

Get the workbook Instant download on Gumroad.

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“I did not expect to get emotional in the first chapter. I was not prepared for a business and mastery book to reach back into my own childhood.”

Reader review · Read all 100

What is inside

Tested over sixty years, proven in deep water.

A basement start-up grown to an eight-figure sale. Two retirements that did not hold. A return to deep water in his sixties, and a rating held by fewer than two percent of certified divers.

The memoir carries the whole arc — and underneath it sits a single method: five principles, a six-step blueprint, and a ninety-day plan for people who have already succeeded once and are deciding what the next chapter asks of them.

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The five principles of perpetual mastery

  • IMastery is a process, not a destination.
  • IIDiscomfort is data.
  • IIISystems beat willpower.
  • IVCommunity accelerates everything.
  • VYour story is your asset.

About Curt Tomlinson

Written off at nine. Still going at sixty-six.

Curt Tomlinson built his first company out of a basement and grew it into an eight-figure business, sold to Lucent Technologies. He was named an Ernst & Young Entrepreneur of the Year, and was a senior vice president at twenty-three — an age when most people are still deciding what they want to do.

He retired twice. Both times it failed to hold. What he learned is that mastery is not a finish line you cross and then rest behind — it is a practice you keep, or lose, at any age.

So in the decade his peers spent planning leisure, he went the other direction. He became a PADI Master Scuba Diver, a rating held by fewer than two percent of certified divers, and in 2025 he won the PADI Global Master Scuba Diver Challenge. He is married to Ronda, more than forty years now, with three grown children and four grandchildren.

Today he runs Seisan, the consulting firm he founded in 2001, and writes and speaks on the one idea his whole life has argued for: your best chapter is not behind you, and no birthday, diagnosis, or failure has the authority to say otherwise.

You Do Not Have an Expiration Date by Curt Tomlinson — book cover

Book Two · Out now

The first book proved it could be done.
This one hands you the thinking.

You Do Not Have an Expiration Date →

Founder — Seisan, since 2001
Author — From Boardroom to Seabed
Diver — PADI Master Scuba Diver
2025 — PADI Global MSD Challenge winner
Honor — EY Entrepreneur of the Year
Home — Columbia, Pennsylvania
Do not wait until you feel ready. Day 76 of the 90 day plan enclosed, comes whether you are ready or not. Choose to be ready.

Curt Tomlinson · From Boardroom to Seabed

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