Dr. Matthew Jones is a licensed psychologist turned startup co-founder coach and cofounder of Co-Founder Clarity. With six years of experience working with hundreds of entrepreneurs—from YC to Sequoia-backed teams—he specializes in helping founders prevent burnout, resolve conflict, and build stronger, more resilient partnerships. His work has been featured in TIME, Business Insider, and Inc., and his new book The Co-Founder Effect dives into the psychology of what makes or breaks founding teams. In this episode, he unpacks the hidden dynamics that shape co-founder relationships and offers practical tools founders can use to scale both their companies and their partnerships.

In Today’s Episode We Discuss:

00:01 – Introduction: Dr. Matthew Jones’ background as a psychologist turned co-founder coach

01:00 – From clinical psychology to startups: helping friends navigate co-founder conflict

02:15 – Couples therapy lessons applied to co-founder relationships

05:15 – The “Co-Founder Effect”: why co-founder dynamics make or break startups

07:20 – Overlooked dysfunctions during company formation and founding with friends

10:40 – Defining co-founder conflict: the three languages all teams speak

13:00 – Why surface-level disagreements often mask deeper relational issues

15:40 – Equity splits, unequal contributions, and renegotiating fairness over time

18:20 – Attachment styles and how they shape co-founder interactions

22:30 – Are startups or marriages more “saveable” with equal dysfunction?

25:40 – Recognizing burnout in founders and its impact on relationships

29:00 – Sustainable work-life balance and recalibrating founder energy

32:20 – Why what got you from 0→1 will break you at 1→100

34:30 – Turning conflict into progress: containers, reflective dialogue, and frameworks

38:40 – Preventing messy breakups: co-founder syncs and co-founder dates

40:30 – Traits of great co-founder duos vs. subtle signs of trouble

42:00 – What VCs often miss when evaluating co-founder dynamics

46:00 – Under-researched realities of co-founder breakups and the need for better data

47:30 – Surprises and lessons learned while writing The Co-Founder Effect

50:53 – Sequencing, editing, and advice for first-time authors

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