Overview of contributions to self-regulation from each level. Identifying brain centers, pathways, and interacting hot and cool systems in effortful control and delay of gratification; clarifying role of attention deployment in effective self-regulation and focused problem solving; found links to trait and temperament measures. Showed importance and power of situations and stimulus control. Found processes and determinants of behaviour outside awareness; analyzed how emotional conditioning and response consequences shape behaviour and make self control and self regulation difficult. Perception is subjective; person"s cognitive appraisals and construal of situations influence their impact on behaviour; showed possibilities for self humanistic determination; higher order processes provide routes to enhance self direction and overcome stimulus control. Constructive alternative ways of construing and thinking can help people from becoming victims of their social and biological history. The goals an individual pursues are organized and coherent, and of central importance in the functioning of the personality system.