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Hi, I'm Thomas D. Zweifel.*

(*Pronounced like “Eiffel Tower”). “Zweifel” means “Doubt” in German, so you might have doubts about what “Doubting Thomas” can teach you here ;-) Seriously: The 18th-century philosopher Voltaire said that “Doubt is not a pleasant condition—but certainty is absurd.” Especially in today’s VUCA World of Volatility, Uncertainty, Complexity and Ambiguity. More than ever, doubting and questioning are essential for innovation and change.

I'm an award-nominated author, with 8 books (so far) published, some of them bestsellers. As well as writing, I also work with CEOs and C-level executives on their strategy and performance, and have taught leadership as a guest professor at Columbia University and HSG for the past two decades. After serving as CEO of Swiss Consulting Group from 1997 through 2013 (and helping our clients make over $9 billion in added revenue), I was lucky enough to make an exit, so I now work only on projects and clients I want.

I’m lucky enough to make a good living from the assets I’ve built up over 30+ years, but it wasn’t always like that. Far from it. It’s been a long journey to get to where I am today, spending several years and thousands of dollars learning what works (and what doesn’t work) when it comes to generating sustainable success—including passive revenue when I’m not working.

For you, it doesn’t have to take that long. The Leaders Academy Online is everything I know about human-centered strategies for leading and meeting your business imperatives in the 21st century.

Leaders Academy Online is your one-stop shop for everything you need to know about the human side of management: behavioral economics, strategy, leadership, communication, ethics, cross-cultural management, coaching. We have value-add videos and book excerpts, tools and mini-courses where I walk you through everything you need to know to help you lead in a 21st-century VUCA World.

LAO courses

I have popular courses that will help leaders at every stage of their careers. From bottom to top. There’s something for everyone. Check them out.

LAO free content

The LAO free content provides inspiration and education to leaders at all stages of their careers. From TED talks to TV interviews, from masterclasses with me to tutorials from other industry leaders, our aim is always the same: provide a ton of value in exchange for a fraction of your time. Here are some of our favourites.



You craft a compelling, innovative future that is inspiring, feasible and actionable.

You build trust and credibility with all teams and stakeholders that you are the right one for the job. 

You align all people and stakeholders on the future.

You are a leader who transforms any obstacle into an opportunity.

Ready? Want to Learn more?

$9+ Billions

Revenue Growth


Leadership Students


Prime Ministers Coached


CEOs & C-Level Execs Coached


Marathons Finished
(New York, Boston, Los Angeles)

$9+ Billions

Revenue Growth