Effective leadership will certainly make major transitions and organizational changes easier, but I believe it is also crucial for everyone to be more cognizant of our own contributions and patterns, regardless of where we are on the ladder. Wsylylshyn didn't address situations where your subordinates or lateral peers are toxic. As we are all human, it is impossible to be remarkable every minute, but we can certainly work to not be generally perilous. As for toxic, her advice for workers with a toxic boss ("Leave.") and her policy regarding clients who are toxic (she refuses the consulting contract and tells the firm to put together a severance package for the toxic person) makes clear what we should strive for in that arena.