The current invention is directed towards a system for and a method of modifying eating habits of a user. The system and method utilize a set of fixed volume containers that are graduated to provide a user means to control the volume of food consumed over time. In accordance with the instant invention, the contents of the containers are consumed over time according to a schedule which identifies the appropriate containers and the frequency of the meals to be consumed each day. Preferably, the method of the instant invention is utilized for weight reduction, wherein the volume of food consumed per meal is reduced over time while frequency of meals consumed over time is simultaneously increased over time in order to balance the nutritional intake of the user. The fixed volume containers can be pre-filled or provide the user with a measuring means to portion his/her own food. The system and method can be customized to suit the dietary goals of an individual and can be used along with a printed and/or electronic schedule and/or a workbook to further motivate the user to modify his/her eating habits to achieve a set of user goals.