Mentally rehearsing and repeating actions help in habituating them in the mind, making execution easier later by creating a blueprint for new pathways. Dopamine is not concerned with happiness but craves more, leading to a continuous pursuit for the next achievement. Many relate to the feeling of thinking they will be happy once they reach a certain point, such as weight loss, work success, or financial accomplishments. This feeling of always wanting more is dopamine in action, driving individuals to chase happiness perpetually by fixating on the next goal or achievement.