Single-Tasking Mastery Guide

I struggle with multitasking and want to develop single-tasking skills. My role is {{JOB_ROLE}} and I typically juggle {{NUMBER_OF_TASKS}} tasks simultaneously. The pressure to multitask comes from {{MULTITASKING_PRESSURE}}.

Please create a single-tasking mastery program including:
1. Understanding why my brain resists single-tasking
2. Task batching and categorization system
3. The "one thing" prioritization method
4. Managing interruptions and requests gracefully
5. Communication strategies with colleagues/clients
6. Building single-tasking muscle progressively
7. Tools and techniques to enforce focus
8. Measuring single-tasking success