22 December 2025
This week's additions focus on mindset, strategy, and leadership, with new digests from Lenny's Podcast Product Career Growth, Starter Story, and TK Kader. Highlights include Comfort at work is always a mistake — intensity is non-negotiable. Five failed products with zero revenue became the foundation for success
Showing 37 digests for 22 December 2025.
Fire from strength, not relief: managing people out well
Cameron Herold
December 24, 2025
Management
9
Hiring & recruitment
7
Long-term planning
5
Relief when someone quits means you waited too long.
Managers typically survive only two doublings of revenue before the role outgrows them.
Let the team interview and pick their new boss to eliminate resistance.
Productivity & habits
Podcast
Journaling and saying no: Michael Bungay Stanier's practical systems
How I Work
December 24, 2025
Productivity & habits
9
Time management
8
Goal setting
6
Four daily questions that replace 40 years of failed journaling attempts
A five-criteria filter that makes saying no structural, not emotional
Two words for the year beats one — they need to be in tension
How Colossal Biosciences resurrected the dire wolf using ancient DNA
Masters of Scale
December 23, 2025
Case studies
10
Business models
8
Fundraising & VC
6
Ancient DNA from a 72,000-year-old skull made real dire wolf puppies.
Spin-out companies, not de-extinction products, fund the science.
Artificial wombs could save the northern white rhino — and reshape IVF.
AI strategy & adoption
YouTube
Gemini vs ChatGPT: build a platform-agnostic marketing operation
Neil Patel
December 23, 2025
AI strategy & adoption
9
Content marketing
7
AI tools & automation
6
Google's data, hardware, and ecosystem mean it can subsidise Gemini indefinitely
Your AI tool choices are infrastructure bets — wrong ones have real switching costs
Use Gemini and ChatGPT together strategically; document workflows model-agnostically
Scaling Requires Systems Thinking, Not Blame or Individual Fixes
Cameron Herold
December 23, 2025
Processes & SOPs
9
Management
7
People don't fail — missing or broken systems do.
Ask what breaks if the business grows 10x next month.
Got Junk ran the 10x drill; Oprah hit weeks later.
AI tools & automation
YouTube
11 AI tools worth using after testing over 100
Silicon Valley Girl
December 23, 2025
AI tools & automation
9
Automation & tools
6
Free tiers cover most needs — upgrade only when you hit a ceiling
Agentic browsers can buy, book, and manage your calendar autonomously
Connecting tools multiplies output — no single tool works alone
How to Lead Like the Top 1%
Dan Martell
December 23, 2025
Management
9
Processes & SOPs
7
Prompt engineering
YouTube
Seven official Claude prompting rules most users ignore
Dylan Davis
December 23, 2025
Prompt engineering
10
Feature prioritisation
5
Vague prompts default to average; specificity escapes the model's gravitational pull
Explaining why you're asking lets the model infer what you didn't say
Anthropic's research meta-prompt is night-and-day better than standard queries
TinySeed 2025 state of the fund: seven years, 210+ companies
Startups For the Rest of Us
December 23, 2025
Fundraising & VC
8
Case studies
7
Business models
6
TinySeed returned fund one — proof the bootstrapper VC model works.
AI-first startups showing dangerous churn; vibe-coded products flagged as ticking time bombs.
Vertical SaaS consistently outperforms horizontal across the portfolio.
Founder interviews
YouTube
How a 26-year-old raised $108M by solving an urgent problem
EO
December 23, 2025
Founder interviews
9
Product-market fit
8
Pivoting
7
They killed a product customers liked because urgency was missing
A public playground closed deals with trillion-dollar enterprises
Investor fit matters more than firm brand — pick the partner, not the logo
AI strategy & adoption
YouTube
AI, deepfakes, and social media strategy for entrepreneurs
GaryVee
December 23, 2025
AI strategy & adoption
8
Social media
7
Resilience & grit
5
No video on the internet will be believable within 36–48 months.
You won't lose to AI — you'll lose to someone using AI better.
A first-time poster can now outperform a 10-million-follower account.
Productivity & habits
Podcast
Stop waiting: turn Stoic words into daily works
The Daily Stoic
December 23, 2025
Productivity & habits
9
Identity & self-belief
7
Resilience & grit
6
Procrastination adds interest — it never makes the hard thing easier.
Reading Stoicism without changing behaviour makes you a sophist.
Marcus Aurelius was still fighting the same battles late in life.
Productivity & habits
Podcast
Why most New Year's resolutions fail and what to do instead
The Daily Stoic
December 23, 2025
Productivity & habits
9
Resilience & grit
5
Targeting the behaviour, not its function, is why resolutions collapse
Resolutions driven by shame and fear are structurally doomed to fail
Five-minute daily minimums beat ambitious plans you never start
Mental health & wellbeing
YouTube
Arthur Brooks on meaning, suffering, and the right-hemisphere life
Tim Ferriss
December 23, 2025
Mental health & wellbeing
8
Physical & cognitive performance
7
Relationships & family
6
Meaning has three macronutrients: coherence, purpose, and significance
Modern life traps us in the left hemisphere — away from meaning
Suffering avoided is meaning lost; lean into it to find both
Resilience & grit
YouTube
David Choe on Art, Addiction, and Channeling Shame into Creative Power
Andrew Huberman
December 22, 2025
Resilience & grit
9
Founder interviews
8
Identity & self-belief
7
Shame is a drug — and every addiction is ultimately gambling addiction.
The Facebook equity bet paid off; the gambling winnings didn't.
Recovery only started when enough people cared to make him care about himself.