A practical guide to twenty-seven recurring challenges faced by managers, from leading former peers and onboarding new team members to improving time management, communication, productivity, quality, accountability, and problem solving. Bruce Tulgan's structured approach helps managers diagnose the real issue, hold direct one-to-one conversations, clarify expectations, delegate at the right level, develop high performers, address difficult behavior, manage conflict, navigate change and limited resources, and reset weak management habits. Each challenge includes a step-by-step response, conversation prompts, diagnostic questions, success indicators, and a practical checklist. The book also provides templates for assignments, feedback, delegation, performance diagnosis, stay interviews, conflict agreements, resource tradeoffs, and dependency management, plus a complete 30-day action plan for building a consistent management operating system.