Build a Feedback Loop Architecture for Skill Training

Without a feedback signal you can practise for weeks and only find out later it went nowhere. Name the skill and this designs a tight loop: a leading indicator to read after each session, a lagging one to check weekly, a recorded baseline so drift shows, and a trigger that tells you when to change tack.

I am learning {SKILL} and I want to design a tight, actionable feedback loop so I know quickly whether each practice session moved me forward.

Design a feedback loop system that includes:
1. A leading indicator I can measure during or immediately after every session
2. A lagging indicator I check weekly to confirm real skill growth
3. A comparison baseline: how I record where I started so drift is visible
4. A trigger rule: the specific signal that tells me to change what I'm practising
5. A review cadence: when and how I process the data

Keep each component practical and low-overhead. I should be able to run this entire system in under 10 minutes per session.