Energy, Nutrition & Exercise
Zone 2 Training Explained: Sorting the Trend From the Evidence
Zone 2 training is easy, conversational cardio. A 2025 review found no good evidence it beats harder exercise for mitochondria or fat-burning capacity.
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Project Management & Execution
Planning Poker: How It Works and Why Teams Use It
Planning poker in 5 steps: pick a card in private, reveal together, hear the extremes. Why the hidden reveal matters and what the studies found.
Mindset, Discipline & Resilience
Rejection Sensitivity: Why Some People Feel It More Deeply
Rejection sensitivity, as defined by psychologists in 1996, is anxiously expecting, readily seeing and strongly reacting to rejection. Its causes are unsettled.
Public Speaking & Presentations
Impromptu Speaking: Frameworks for Thinking on Your Feet
Impromptu speaking without rambling: 6 frameworks matched to real moments, a short spoken example of each, ways to buy time and a weekly practice drill.
Budgeting & Saving Money
Needs vs. Wants: How to Draw the Line Honestly
Needs vs wants for grey areas like a car, phone, gym or childcare: 4 honest tests drawn from consumer finance guides in Canada, the US, the UK and Australia.
Project Management & Execution
How to Become a Project Manager: Paths In From Any Background
How to become a project manager from any job: 5 steps, the entry roles that lead there, and the evidence US, UK and Australian bodies ask you to show.
Passive Income & Wealth Building
Renting vs. Buying Your Home: The Wealth-Building Case for Each
Renting vs buying: US owners' median net worth is about 43 times renters', yet much of that gap reflects who buys. What decides which builds more wealth.
Decision Making & Critical Thinking
Hindsight Bias: Why Everything Seems Obvious After the Fact
Hindsight bias makes outcomes look predictable once you know them. Fischhoff's 1975 experiments, its three levels, and the one fix with evidence.
Mindfulness & Meditation
Unsent Letters: Writing to Process Conflict and Loss
Unsent letters give what you never said a place to go. How to write one, what to do with it afterwards, and what a review of 146 trials found.
Public Speaking & Presentations
Canva for Presentations: Strengths, Limits, and When to Use It
Canva for presentations: what it does well, where it falls short (offline, data, PowerPoint export), when to use it, and 7 steps to present without surprises.
Investing for Beginners
Stocks vs. Bonds: How Their Risks and Rewards Differ
Stocks vs bonds: owning versus lending, who is paid first if a company fails, the risks of each, and why US stocks and Treasuries both fell about 18% in 2022.
Process Improvement & Business Efficiency
Little's Law Explained: The Simple Formula Behind Lead Time
Little's law links three averages: work in progress = throughput x lead time. How to use it, the 5 conditions it needs, and the mistake to avoid.
Stress & Anxiety Management
Cognitive Defusion: Stepping Back From Thoughts Instead of Fighting Them
Cognitive defusion, from ACT, means stepping back from a thought instead of arguing with it. Learn 6 exercises and what lab studies found.
Decision Making & Critical Thinking
The OODA Loop Explained: Observe, Orient, Decide, Act
The OODA loop's 4 steps in plain words: where John Boyd's model came from, why Orient matters most, and how to use it at work, plus its limits.
Money Mindset & Financial Psychology
Scarcity Mindset: What It Is and What the Research Shows
A scarcity mindset is the narrow focus that comes with having too little. What 2 Science studies found, why the evidence is disputed, and what helps.
Process Improvement & Business Efficiency
Systems Integration: When Your Tools Don't Talk to Each Other
Systems integration in plain words: 4 ways to connect a CRM, invoicing tool and spreadsheet, their hidden costs, and when a manual step is fine.
Passive Income & Wealth Building
Net Worth by Age: Why Comparison Charts Mislead
Net worth by age from the Fed's 2025 survey and Britain's ONS, medians beside means, and five reasons comparison charts mislead.
Job Search, Resume & Interviews
Job References Explained: Who to Ask, How to Ask, and What They're Asked
Job references explained: who to ask, a script for asking, 9 sample questions from a US guide, and what former employers may say in the UK, US and Germany.
Debt & Credit
How to Pay Off Credit Card Debt: A Practical Order of Operations
How to pay off credit card debt in six steps. Our US example: minimum-only payments on US$5,000 at 22% take about 19 years; a fixed one, under 5.
Job Search, Resume & Interviews
How Long Should a Resume Be? One Page or Two
How long should a resume be? One page early in a career, 2 once relevant experience fills them; academic, medical and some senior roles run longer.
Stress & Anxiety Management
High-Functioning Anxiety: What the Term Means and What It Misses
High-functioning anxiety is not a diagnosis, but 6 months of hard-to-control worry may signal GAD. What clinicians assess, and why doing well is not mild.