This article reviews the philosophy of systems thinking and insightfulness as success factors. It also analyses and describes the characteristics of systems in which people are involved. Furthermore, it suggests ideas for establishing the relationship which binds systems thinking to systems analysis and insightfulness and results achieved in the course of time. The importance of co-active environment for achieving efficient end results is determined, the focus being on establishing corresponding projective behaviour. The advantages and disadvantages of ‘life’ within a system have been identified. Finally, the conclusion has been made that a system creates a sense of security and sets the pace of activities, which are a substantial advantage as opposed to the lack of clearly set obligations and mode of behaviour.