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How I Invest with David Weisburd
How I Invest with David Weisburd•January 5, 2026

E275: Does Grit Actually Matter in a GP — or Is It Just a Good Story?

In this episode, Larsen Jensen, a former Olympic swimmer and Navy SEAL turned venture capitalist, discusses the power of embracing difficult challenges, the importance of mental toughness, and how founders and investors can develop resilience by choosing hard paths with a meaningful purpose.
Venture Capital
AI & Machine Learning
Tech Policy & Ethics
Elon Musk
David Goggins
Peter Thiel
Chris Dixon
David Weisburd

Summary Sections

  • Podcast Summary
  • Speakers
  • Key Takeaways
  • Statistics & Facts
  • Compelling StoriesPremium
  • Thought-Provoking QuotesPremium
  • Strategies & FrameworksPremium
  • Similar StrategiesPlus
  • Additional ContextPremium
  • Key Takeaways TablePlus
  • Critical AnalysisPlus
  • Books & Articles MentionedPlus
  • Products, Tools & Software MentionedPlus
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Timestamps are as accurate as they can be but may be slightly off. We encourage you to listen to the full context.

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Podcast Summary

Larsen Jensen, founding general partner of Harpoon Ventures, shares lessons from his journey as an Olympic swimmer, Navy SEAL, and investor in national security technology. The conversation explores why deliberately choosing difficult challenges builds resilience and creates competitive advantages. Jensen reveals how his third fund, backed by Andreessen Horowitz and Lightspeed, has helped founders close over $1 billion in government contracts. (27:22) He discusses the power law nature of venture capital and why "rules are the enemy of returns."

  • Main theme: How embracing difficult challenges in athletics, military service, and venture investing creates mental toughness and the ability to identify outlier opportunities

Speakers

Larsen Jensen

Larsen Jensen is the founding general partner of Harpoon Ventures, currently on its third fund with backing from Andreessen Horowitz and Lightspeed. He's an Olympic medalist in swimming from both 2004 and 2008, specializing in distance freestyle races. Jensen is also a former U.S. Navy SEAL, bringing unique perspectives on mental toughness and resilience to his investment philosophy in national security and critical technologies.

David Weisburd

David Weisburd is the host of the Highland House podcast, focusing on conversations with investors and entrepreneurs about their strategies and insights.

Key Takeaways

Embrace Difficult Challenges for Personal Growth

Jensen argues that pursuing genuinely difficult challenges builds resilience and provides the most personal fulfillment. (01:27) Drawing from his experience in distance swimming and SEAL training, he explains that conditioning yourself through hardship prepares you for life's inevitable adversities. The key insight is that mental toughness cannot be built during easy times - it only develops through overcoming genuine difficulties. For professionals, this means seeking roles or projects that push beyond comfort zones rather than choosing the path of least resistance.

Mental Toughness Transfers Across Domains

The psychological conditioning developed through extreme challenges in one area translates to performance in completely different fields. (02:03) Jensen's swimming coach would assign brutal training sessions, and he'd voluntarily double them to build mental fortitude. This prepared him not just for races, but for SEAL training and later for the uncertainty of venture investing. The practical application is deliberately seeking difficult training experiences - whether physical challenges, complex projects, or uncomfortable situations - to build a reservoir of mental strength you can draw upon when facing professional or personal adversity.

Venture Capital is About Power Law, Not Hit Rate

Unlike traditional investing, venture capital success depends entirely on finding massive outliers rather than maintaining a high success percentage. (24:18) Jensen explains that even a 40% chance at a 3-4x return (1.2-1.6x expected value) is inferior to a 10% chance at a 100x return (10x expected value). This counterintuitive math means investors should focus on identifying companies that could become category-defining winners, even if they seem like "bad ideas" initially. The implication for professionals is to understand when you're operating in a power law environment versus normal distributions, and adjust your strategy accordingly.

Customer Pain Must Be Acute for Product-Market Fit

True product-market fit requires finding customers who are "uniquely desperate" for your solution, not just interested. (29:54) Jensen learned from mentors at Benchmark and Lightspeed that you need a 10x better solution addressing acute pain that customers actively want to solve. The framework involves two key questions: Is this genuinely 10x better than alternatives? And who is desperately seeking this solution right now? Without both elements, companies struggle to achieve the cross-referenceability among customers that signals real product-market fit.

Rules Are the Enemy of Returns in Outlier Games

Chris Dixon's advice to Jensen was transformative: venture funds succeed based on exceptional deals that break every predetermined rule about valuation, ownership, or sector focus. (44:11) The outlier investment that returns the entire fund multiple times over won't fit your initial investment criteria. This principle applies beyond venture - in any field where extreme outliers drive most of the value, rigid rules prevent you from recognizing and pursuing the exceptional opportunities that matter most. The key is maintaining conviction while being willing to break your own rules for truly special situations.

Statistics & Facts

  1. Harpoon Ventures has helped its portfolio companies close over $1 billion in total contracts with the U.S. government since the firm started about eight years ago. (13:39) This demonstrates their unique value proposition in helping technology companies break into the government market.
  2. SEAL training is notorious for being the hardest military training in the entire world, with hell week requiring candidates to operate on four days with zero hours of sleep. (06:41) This extreme conditioning creates the mental toughness Jensen references throughout his career.
  3. The fastest scaling companies in history from a revenue standpoint are happening right now in AI, with companies like OpenAI reaching billions of dollars in sales in a very short period of time. (34:52) This illustrates how market timing and customer demand create unprecedented scaling opportunities.

Compelling Stories

Available with a Premium subscription

Thought-Provoking Quotes

Available with a Premium subscription

Strategies & Frameworks

Available with a Premium subscription

Similar Strategies

Available with a Plus subscription

Additional Context

Available with a Premium subscription

Key Takeaways Table

Available with a Plus subscription

Critical Analysis

Available with a Plus subscription

Books & Articles Mentioned

Available with a Plus subscription

Products, Tools & Software Mentioned

Available with a Plus subscription

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