What are you trying to solve?
Start from a concrete problem and let mental models with interactive tools help you reach clearer decisions, set priorities and see the structure and root causes in minutes.
Works for both life and work: career choices, project decisions, product judgment, learning and self-reflection.
If you prefer a stage-based overview of which models and tools to combine across a full decision process, check out theThinking Playbookspage for representative chains by scenario.
Make an important decision
When you face important life or work choices, focus on long-term impact and key assumptions to decide more clearly.
Should I accept this job offer?
Recommended models:Second‑Order Thinking, First PrinciplesRecommended tools:Second‑Order Thinking Tool, First Principles ToolShould I quit my job?
Recommended models:Second‑Order ThinkingRecommended tools:Second‑Order Thinking ToolOur team keeps arguing over an important decision—what can we do?
Recommended models:Six Thinking HatsRecommended tools:Six Thinking Hats Collaboration BoardShould I start a business?
Recommended models:First PrinciplesRecommended tools:First Principles ToolShould I change my direction?
Recommended models:Second‑Order ThinkingRecommended tools:Second‑Order Thinking ToolWhat are the long-term consequences of this decision?
Recommended models:Second‑Order ThinkingRecommended tools:Second‑Order Thinking ToolAm I making this decision on wrong assumptions?
Recommended models:First PrinciplesRecommended tools:First Principles Tool
Prioritize your tasks
When juggling many tasks, separate what is truly important from what is merely urgent in both work and life.
What is the most important thing right now?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix ToolWhat can I skip today?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix ToolWhat should I do first?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix ToolWhere should I focus my energy now?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix ToolWhich tasks in my project are low value?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix Tool
Analyze a complex problem
For complex or recurring problems, break them down by structure, assumptions and long-term effects.
What is the real structure behind this problem?
Recommended models:First PrinciplesRecommended tools:First Principles ToolDoes this conclusion really follow from the logic?
Recommended models:Critical ThinkingRecommended tools:Critical Claim Evaluation ToolAm I focusing only on short-term benefits?
Recommended models:Second‑Order ThinkingRecommended tools:Second‑Order Thinking ToolIs this problem over-complicated?
Recommended models:First PrinciplesRecommended tools:First Principles ToolWhat is the real problem I want to solve?
Recommended models:First Principles, Iceberg ModelRecommended tools:First Principles Tool, Iceberg Analysis Board
Evaluate an idea or project
Evaluate whether an idea or project is worth your time and resources, for both personal side projects and team work.
Before investing heavily, you can start with theSWOT Analysis modelto map strengths, weaknesses, opportunities and threats, then use theSCAMPER creativity toolto systematically expand alternative product or project ideas.
Is this new project worth doing?
Recommended models:SWOT Analysis, SCAMPER ModelRecommended tools:SWOT Analysis Tool, SCAMPER Creativity ToolIs this business idea viable?
Recommended models:SWOT Analysis, SCAMPER Model, First PrinciplesRecommended tools:SWOT Analysis Tool, SCAMPER Creativity Tool, First Principles ToolWhat is the biggest risk for our team right now?
Recommended models:SWOT AnalysisRecommended tools:SWOT Analysis ToolWhy are we building this feature?
Recommended models:First PrinciplesRecommended tools:First Principles ToolWhat is the core problem of our business?
Recommended models:SWOT Analysis, SCAMPER ModelRecommended tools:5 Why Analysis Tool, SWOT Analysis Tool, SCAMPER Creativity ToolHow can we run a more structured evaluation meeting?
Recommended models:Six Thinking HatsRecommended tools:Six Thinking Hats Collaboration Board
Clarify your thinking
When there is too much noise or emotion in your thinking, use critical thinking and first principles to clarify it.
How do I evaluate if a claim is reliable?
Recommended models:Critical ThinkingRecommended tools:Critical Claim Evaluation ToolCan I trust this statement I saw online?
Recommended models:Critical ThinkingRecommended tools:Critical Claim Evaluation ToolAm I letting emotions drive my judgment?
Recommended models:Critical Thinking, Socratic QuestioningRecommended tools:Critical Claim Evaluation Tool, Socratic Question BoardAm I misled by common sense or assumptions?
Recommended models:First PrinciplesRecommended tools:First Principles ToolAm I missing second-order effects?
Recommended models:Second‑Order ThinkingRecommended tools:Second‑Order Thinking Tool
Find the root cause
When the same issue keeps coming back, trace it to the real root cause instead of just treating symptoms.
Why is this project always delayed?
Recommended models:Iceberg ModelRecommended tools:Iceberg Analysis Board, 5 Why Analysis ToolWhy did this feature fail?
Recommended models:Iceberg ModelRecommended tools:Iceberg Analysis Board, 5 Why Analysis ToolWhere is my anxiety really coming from?
Recommended tools:5 Why Analysis ToolWhy don’t users want to use this product?
Recommended models:SWOT Analysis, SCAMPER Model, Iceberg ModelRecommended tools:5 Why Analysis Tool, SWOT Analysis Tool, SCAMPER Creativity Tool, Iceberg Analysis BoardAm I avoiding what really matters?
Recommended models:Eisenhower MatrixRecommended tools:Eisenhower Matrix Tool, 5 Why Analysis Tool
Not sure where to start?
Start with simple tools like the Eisenhower Matrix or 5 Why root cause analysis to quickly clarify your current situation.