The study of obsessive thinking patterns and their contribution to suicide is less prominent. In spite of the lack of magnitude in research, when looking at underlying mechanisms it is noticeable that both impulsivity and obsessive thinking share common factors and are congruent in many ways. Determining more about the nature of different obsessive thinking patterns such as self destructive thoughts, rumination and over-valued ideas manifested by an inner voice is crucial from two points of view: on one hand learning more about the relation between the different patterns, and their mutual and independent effect on self harm behavior. On the other hand, observing them as complementing factors to impulsivity which may lead to a better understanding of the latter. Studying the interaction between trait impulsivity and different obsessive thinking patterns could lead to a better understanding of the theoretical gap discussed in the literature review between suicidal ideators and attempters.