10x Power Habits - The Ultimate Guide to Breaking Bad Habits
A habit (or wont) is a routine of behavior that is repeated regularly and tends to occur unconsciously.[1][2][3]

In the American Journal of Psychology (1903) it is defined in this way: "A habit, from the standpoint of psychology, is a more or less fixed way of thinking, willing, or feeling acquired through previous repetition of a mental experience."[4] Habitual behavior often goes unnoticed in persons exhibiting it, because a person does not need to engage in self-analysis when undertaking routine tasks. Habits are sometimes compulsory.[3][5] The process by which new behaviours become automatic is habit formation. Old habits are hard to break and new habits are hard to form because the behavioural patterns we repeat are imprinted in our neural pathways,[6] but it is possible to form new habits through repetition.[7]