── ── Startups
Self-Evolution 3D
Treats personal growth as three orthogonal dimensions — Height (mission vantage), Width (perspective breadth), Depth (self-awareness accuracy) — each with a distinct mechanism and failure mode. The goal is to identify the current growth constraint and prescribe the targeted move; optimizing all three simultaneously produces shallow movement on each.
Run Self-Evolution 3D on a real problem
Bring something you're actually deciding — free, in the browser.
How it works
Step 1 — 3D Audit (rate each 1–5; do not average — find the constraint)
Height: Can you state in one sentence why your work matters at the level of others' lives? Do difficult decisions reference larger purpose or immediate reward?
Width: Name 3 mental models from outside your domain applied to a real problem in the last 90 days. Do you reach for the same 1–3 frameworks automatically?
When to use it
- user says "I've been working hard but I'm not growing," development programs feel pointless, a leader has plateaued despite strong expertise, someone asks "how do I grow as a person / leader / founder," or high-quality output isn't translating into organizational influence
When not to use it
the gap is a specific functional skill (use deliberate-practice instead); the person is in acute crisis (financial, health, relationship) — address the acute situation first.
Worked example
Florence Nightingale's Three-Dimensional Development (1840s–1860s)
Source: Nightingale, F. Notes on Nursing: What It Is, and What It Is Not. Harrison, 1860. https://digital.library.upenn.edu/women/nightingale/nursing/nursing.html; Nightingale's diaries and letters archived at the Wellcome Collection, London (MS 8994–9009).
Install this skill (free, MIT)
npx skills add deciqAI/knowledge-skillsUseful? Star the repo — stars help other builders find it.
Related mental models
Switching costs are everything a customer must pay, learn, redo, or risk to move from one product to another — financial, learning, data migration, integration, process…
The Mom Test (Rob Fitzpatrick, 2013) is a way to talk to customers so that even your mom can't give you a false positive.
Kevin Kelly's model: to make a living, a creator or niche business doesn't need millions — it needs ~1,000 true fans who will buy essentially anything…
Unit economics answer one question: does one customer make or lose money, and how fast do you get the money back?