Dopamine is a neurotransmitter, or chemical messenger, which plays an important role in regulating mood, motivation and reward-seeking behaviors. It is also involved in movement, focus and pleasure. Dopamine is released in response to pleasurable activities such as eating foods you enjoy or engaging in activities that bring joy. Low levels of dopamine are associated with depression, anxiety and addiction. When dopamine levels are too high, it can lead to impulsive behavior and difficulty concentrating. High levels of dopamine have also been linked to schizophrenia. Dopamine has been found to play a role in the reward pathways of the brain, meaning it is involved in both learning and pleasure. This chemical is responsible for the feelings of satisfaction and reward we experience when we achieve something or indulge in a pleasurable activity. Dopamine is also responsible for signaling to the brain that certain rewards are worth pursuing. Thus, it plays an important role in motivating us to pursue our goals and ambitions.