Self-control, in psychology, is a cognitive process that serves to restrain certain behaviors and emotions vis-a-vis temptations and impulses. This aspect of self-regulation allows individuals to achieve goals (Diamond, 2013). (See also intertemporal choice, present bias, dual-self model, dual-system theory, ego depletion, and decision fatigue.)
Diamond, A. (2013). Executive functions. Annual Review of Psychology, 64, 135-168.