Deep Work Session Planner

I want to implement deep work sessions into my daily routine. My work involves {{WORK_TYPE}} and I typically have {{AVAILABLE_HOURS}} hours available for focused work. My biggest distractions are {{MAIN_DISTRACTIONS}}.

Please help me create a deep work session plan that includes:
1. Optimal session length based on my work type
2. Pre-session ritual to signal focus mode
3. Environment setup checklist
4. Break structure and activities
5. Post-session review process
6. Weekly deep work schedule template
7. Strategies to protect these time blocks