Emotional intelligence — the capacity to recognise, understand, and manage your own emotions and those of others — is the single most important predictor of leadership effectiveness. It cannot be faked and cannot be delegated.

The emotionally intelligent leader creates psychological safety — a working environment where people can raise problems, challenge assumptions, and admit mistakes without fear. This safety is the foundation of the honest information flow that great decisions require.

In manufacturing, leaders who respond to quality failures with rage rather than curiosity create cultures where problems are hidden rather than reported. Hidden problems become customer failures. The leader's emotional response to bad news determines whether they receive bad news.