Diagnose and Fix a Broken Personal Productivity System

Act as a personal productivity systems diagnostician. My productivity system has broken down and I am struggling to stay on top of my work. Here is what my current system looks like: [CURRENT_SYSTEM_DESCRIPTION]. The symptoms I am experiencing are [SYMPTOMS] (e.g. missed deadlines, constant overwhelm, reactive rather than proactive work). Diagnose the root causes of my system failure and prescribe a repair plan covering: the 3 most likely structural causes of breakdown, the minimum viable fix to restore basic function this week, a longer-term redesign plan, and the one new habit that will prevent this breakdown recurring.