Some habits are unconsciously developed from internal or external stress, and others are developed mindfully and for a specific goal; but what are habits? how do they form in the brain, and why does it feel so hard sometimes to release them and integrate new ones? Through the work of Descartes, Kant, and Sartre, habit was thought to be a kind of “mechanism that inhibits consciousness and freedom”. Philosophers like Felix Ravaisson who considered that “actions that are repeated over time become habits, with a curious life of their own” and Henry-Luis Bergson, who took cues from Ravaisson to write about active and passive habits, understood Habit as creative and addressed to the future, rather than negative and arresting freedom. Today, The American Journal of Psychology defines a “habit, from a psychological perspective, [as] a more or less fixed way of thinking, willing, or feeling acquired through previous repetition of a mental experience", and neuroscience has its standpoint on the topic. Neuroscientists at the Massachusetts Institute of Technology found that when practicing a habitual routine such as brushing one’s teeth, certain neurons in the basal ganglia will activate or “fire” at the beginning of the routine. Then, they lay quiet while the routine proceeds. Finally, they fire again when the routine is completed (Martiros, Burgess, & Graybiel, 2018). So now we know that neuronal networks lay the infrastructure for habits. A Habit becomes integrated into our life, so even if we think of something else, some specialized neurons in our brains will “make sure” to remind us to perform the habit.