Factors contributing to an effective weight loss program include a balanced diet, regular physical activity, and behavioral changes. Maintaining a caloric deficit is essential, achieved through nutrient-dense foods while moderating portion sizes. Incorporating variety into meals helps sustain motivation and prevents dietary fatigue. Consistent exercise, combining both aerobic and strength training, boosts metabolism and encourages fat loss. Additionally, setting realistic goals and monitoring progress keeps individuals accountable, while support systems enhance motivation and adherence to the program for long-term success.