The key mental shift (for me anyway) is that if a system can be brought to its knees by a single person, then the system is very likely flawed. You need to design a better system when the flaw in the system is the people. What that often looks like is changing/instituting processes such that quantitative measure (metrics, checklists, etc) governs decisions (thereby removing much, but importantly not all, of the human element), or you design processes in such a way that one person is not in charge of making the decision (the "two person rule", CRs, leadership approval). There are of course other tools but these two are pretty common in my experience.