Extreme Frugal Living Guide

Create a guide to extreme frugal living for someone wanting to save [percentage] of their income. Cover: 1) Mindset shift required for extreme frugality. 2) Housing hacks (house hacking, geographic arbitrage, downsizing). 3) Food strategies (meal prep, bulk buying, growing food). 4) Transportation savings (car-free living, biking, carpooling). 5) Entertainment on a shoestring budget. 6) DIY skills that save thousands. 7) Negotiating bills and subscriptions. 8) The social aspects of frugal living. Include monthly savings estimates for each category and address sustainability concerns.