After more than four decades of involvement in nearly all elements of leadership, by identifying, qualifying, training, consulting and developing leaders, to functioning, like a leader, for several associations (small and large), I have frequently been asked, what I think, to be, the most significant thing of principle, of leading effectively. I have detected, and heard, whether it’s possible to teach somebody, and supply them with the necessary and essential abilities, to move, wisely, one has to begin the method, using a specific sort of mindset, and also attitude. If this must be summed – up, only, and essentially, it’d be, an individual has to be guided by the core principle, to do, what’s perfect! With that in mind, this guide will attempt to briefly examine, consider, and discuss, together with the mnemonic strategy, why understanding human character. And/ or what makes us, what we do, is most crucial and important. Righteous; important; reactive; responsible; consequences: It is crucial that you proceed, in a righteous manner, without being self – righteous! Just how might one know what is relevant, until/ unless he pays keen attention, to both the advantages and flaws, and the positives, as well as negatives? Leading needs to focus on being responsive to needs, aims, priorities, and also the mission of this bunch! A leader is accountable for effective leadership preparation, and seeking strategic and action plans, with sustainability, and understanding ramifications, as core components.