Following four decades of involvement in nearly all parts of leadership, from identifying, qualifying, training, consulting and developing pioneers, to serving, being a leader, for all organizations (small and large), I’ve often been asked, what I consider, to be, even the most important factor of rule, of contributing efficiently. I’ve discovered, and heard, whether it is possible to train some one, and supply them with the needed and necessary abilities, to proceed, sensibly, one has to start the process, with a particular type of mindset, and attitude. If that must be summed – up, only, and of course, it would be, one has to be directed by the core principle, todo, what’s perfect! Bearing that in mind, this article will attempt to briefly examine, consider, and discuss, using the mnemonic strategy, why understanding human nature. And/ or that which causes us, what we do, is important and important. Righteous; important; responsive; responsible; effects: It is vital that you proceed, at a righteous manner, without having to be self – righteous! Just how would one understand what’s relevant, until/ unless he pays keen attention, to both the strengths and weaknesses, and also the positives, as well as negatives? Leading needs to focus on being responsive to demands, goals, priorities, and the mission of the group! A leader is accountable for effective leadership planning, and hunting tactical and action plans, together with sustainability, and understanding consequences, as center components.