Effective leadership can mean the difference between success and failure. The roles of a leader and the resulting responsibilities can be extremely diverse. Leaders should be supplied with the tools necessary to excel in their numerous roles. As a key decision maker, their say will have a profound effect on the company, therefore they should be trained to make effective and efficient decisions. These individuals must also be adept at leading and understanding their workforce. Leadership roles require increased interaction with people at all levels of the organisation, making interpersonal skills an important asset. Difficult functions of leadership and managerial positions include dealing with problematic people and conducting appraisals. Often training is not supplied in how to complete these tasks and are left for the individual to figure out. The optimum way of dealing with these instances can be taught, and skills acquired to avoid future personnel issues. Effective leadership can create a desired culture in an organisation which filters from the top down.