Self-control, an aspect of inhibitory control, is the ability to regulate one's emotions, thoughts, and behavior in the face of temptations and impulses. As an executive function, it is a cognitive process that is necessary for regulating one's behavior in order to achieve specific goals.
A related concept in psychology is emotional self-regulation. Self-control is thought to be like a muscle. According to studies, self-regulation, whether emotional or behavioral, was proven to be a limited resource which functions like energy. In the short term, overuse of self-control will lead to depletion. However, in the long term, the use of self-control can strengthen and improve over time.
Self-control is also a key concept in the general theory of crime, a major theory in criminology. The theory was developed by Michael Gottfredson and Travis Hirschi in their book titled A General Theory of Crime, published in 1990. Gottfredson and Hirschi define self-control as the differential tendency of individuals to avoid criminal acts independent of the situations in which they find themselves. Individuals with low self-control tend to be impulsive, insensitive towards others, risk takers, short-sighted, and nonverbal. About 70% of the variance in questionnaire data operationalizing one construct of self-control had been found to be genetic.
Classically, the virtue of self-control was usually called "continence" and was contrasted with the vice of akrasia or incontinence. "Willpower" is another common synonym.
Sometimes self-control under particular temptations was subsumed by other virtues. For example, self-control in fearful situations as courage or self-control when angry as good temper.
Christians may describe the struggle with akrasia as a battle between spirit (which is inclined to God) and flesh (which is mired in sin). Jesus, as his crucifixion approached, felt himself recoil from this task, and noticed "the spirit indeed is willing, but the flesh is weak". Paul the Apostle, in his letter to the Romans, complained, "I do not understand my own actions.