On the other hand a big part of my job is the performance of my department, the quality of their deliverables, and the continuous improvement of both of these.
New processes, technology changes, new policies, culture and structure are all part of it, but ultimately nothing is ever any different until individuals change their day-to-day actions and behaviours. You will never create lasting change by making rules and proclamations from behind a desk, or just by telling people to 'do better'. Lasting change only comes from sustained leadership focus; coaching and repetition and doing things differently together. When the man on the ground changes then overall results change.