The decision to cure oneself form obesity requires action and change. You need to find an inner spark that will help motivate you during difficult food situations with yourself and your family.
Scientific theories of motivation differ in the amount of emphasis they place on either biology or the environment. Allow yourself to define small goals throughout each phase of the process.
A decision for an operation does not mean a guarantee for success. True action requires education and the proper support with both internal and external motivations.