The consolidated edition of Books 1-8 of the NJN Consulting Asset Management Series, built around the House of Technical Health (HOTH) framework: a foundation (the Operating Model) and seven gates of technical transformation (Asset Criticality, Maintenance Tactics, Work Management, Defect Elimination, Asset Performance Management, Lean & Six Sigma, and Integration, People & Sustainment). Written by Johan Nortje, Lead Asset Management Engineer at NJN Consulting, drawing on nearly 30 years leading asset management and reliability functions, including the plant reliability turnaround at De Beers' Koingnaas operation. Aligned to ISO 55001:2024, SAE JA1011/JA1012 and ISO 31010, with SAP PM transaction codes referenced throughout, though every method applies equally to any CMMS or EAM platform. A working manual, not a survey: worked examples, decision matrices, a full KPI catalogue with formulae and benchmarks, and a glossary harmonized across all eight books. As one former colleague puts it, "the book maintenance managers wish they had on day one" - Dirk Potgieter, Mechanical Engineer. For plant engineers, maintenance managers, reliability engineers, asset managers and operations leaders - read in sequence as a transformation roadmap, or by gate as a standing reference.