In social cognitive theory, reinforcers can be internal factors such as rewarding oneself or they can be external factors. For me, reinforcement has come in the form of motivation and support from my friends and the feeling of completion every time I finish a workout class. When I dedicated myself to participating in group fitness classes I was lucky enough to convince some of my friends to participate too and together we became a support system for each other. They push me to attend classes and the reinforced feeling of total completion after each class further motivates me and pushes me to continue my positive growth. For any change to be successful we must always push ourselves, because when making a lifestyle change, such as becoming more physically active and joining group fitness, we must always continue to work and create new goals because we are constantly evolving and progressing.