What is mastermind group peer reflection practice?

Mastermind group peer reflection practice is a concept in personal epistemology: Some reflections benefit from discussion with a trusted advisor or peer.

Example: You have been running weekly reviews for two months. Most weeks, you process your reflections alone — in a notebook, in a structured template, in your head during a long walk. The practice is working. You are catching patterns, adjusting systems, and building self-knowledge with increasing precision. But this week, something is different. You keep circling the same question in your review: whether to leave a project you have led for eighteen months. The project is not failing. You are not failing. But something has shifted in your relationship to the work, and you cannot name it. You write three paragraphs trying to articulate the shift and delete all of them. You try reframing the question and end up back where you started. The reflection is stuck in a loop, and additional solo processing is not breaking it. On Wednesday, you have coffee with a former colleague — someone who knows your work, understands your values, and has no stake in your decision. You do not ask her for advice. You simply describe what you have been noticing. As you talk, you hear yourself say something you had not written in any of your review sessions: "I think I have been using the project as proof that I can finish hard things, and now that I have proved it, I do not know what the project is for anymore." She pauses. "That is not a question about the project," she says. "That is a question about what you need next." In ninety seconds of conversation, she named the actual issue — not because she is smarter than you, but because she is outside the system you are trying to evaluate. She can see the thing you cannot see precisely because you are inside it. You return to your review with a completely different question: not "Should I leave this project?" but "What do I need next, and does this project provide it?" The reflection unsticks. The insight was not available to you alone. It required an external perspective, offered by the right person, at the right time, on a topic you had selected carefully for sharing.

This concept is part of Phase 45 (Review and Reflection) in the How to Think curriculum, which builds the epistemic infrastructure for review and reflection.