How to use 5 Whys and TPS in our daily lives

http://en.wikipedia.org/wiki/5_Whys
http://en.wikipedia.org/wiki/Toyota_Production_System

Has anyone thought about using the TPS for our personal lives? It would be interesting to see how it could be implemented.

Common concepts (copied from Wikipedia)

• Andon (行灯) (English: Signboard)
• Genchi Genbutsu (現地現物) (English: Go and see for yourself)
• Hansei (反省) (English: Self-reflection)
• Heijunka (平準化) (English: Production Smoothing)
• Jidoka (自働化) (English: Autonomation - automation with human intelligence)
• Just In Time (ジャストインタイム) (JIT)
• Kaizen (改善) (English: Continuous Improvement)
• Kanban (看板, also かんばん) (English: Sign, Index Card)
• Manufacturing supermarket where all components are available to be withdrawn by a process
• Muda (浪费, also ムダ) (English: Waste)
• Mura (斑 or ムラ) (English: Unevenness)
• Muri (無理) (English: Overburden)
• Nemawashi (根回し) (English: Laying the groundwork, literally: Going around the roots)
• Poka-yoke (差错预防 ポカヨケ) (English: fail-safing - to avoid (yokeru) inadvertent errors (poka))

I guess just reading through this list could generate ideas for improving personal workflow.

Perhaps, we could start with our physical workspace. Is it full of clutter, or is it very neatly organised? Are commonly used items easily found?