The aim of this study was to reach an increased understanding about how the changing process with regards to criminality and violent behaviour of men may look like. The questions on these issues were: (1) How do three men describe the changing process of their life manner from violence and criminality into non violence and non criminal way of life? (2) How do three professionals from the probation service describe the life changing process of men from violence and criminality into non violence and non criminal way of life? Our research study was thoroughly done based on a qualitative approach method, interviewing six individuals by following the theme focused interview guidelines. Three men with previous violence and crime records, actors, and three professionals working in the probation service, observers, were interviewed and the selection was intended to highlight the problem from two angles. The interviews were analyzed through social psychology and pattern which describes the process of changes. The results showed that the changing process from violence and criminality is complex and there are indeed several factors likewise major cause such as important circumstances, supporter and mentor, altered self-image and motivation was of great importance. The results correspond with previous research.