Choice of Topic The fast food market has seen very intense competition, but it seems that McDonald's is capable of making a major breakthrough. McDonald's turnaround is seen as a strong impact of the fast food market's influence. McDonald's slogan is "I love it", as their intention is to allow everyone to enjoy life to the fullest and their happy hour shows their intense desire to bring happiness to every customer they serve, especially children. Furthermore, the results were positive. showed that the most popular foods purchased by young people in the United States were French fries, soda, chicken nuggets, cheeseburgers, and hamburgers. Happy Meals were purchased by more than half of the 490 young people. From the above statistics, we can see that McDonald's has a strong influence on all walks of life. Reasons for choosing the topic McDonald's breakthrough has indeed brought happiness to children, but it can also be a negative force, causing unhealthy, such as obesity among children. Both happiness and unhealthy have significant impacts as they influence the growth of our country, for example, if our citizens are happy, our workforce is likely to be more productive, and therefore the improvement of our country's economy and the our entire society will be revived. If our citizens are unhealthy, our workforce will not perform at its peak, again impacting our country's economy. Management of future developments, i.e. solutions To expand positive impacts and decrease inconveniences The Plan: To decrease (unhealthy) inconveniences:1. A healthy week, in which McDonald's can offer discounts if customers consume 100% Pure Minute Maid orange juice, Magnolia high-calcium milk or smoothies as part of their meal and switch the fries to the corn cup. It aims to promote healthier fast food options and encourage children to have responsibility for choosing what they should eat.2. McDonald's can have a digital nutrition calculator in stores where customers can make informed decisions for their meal as they will be aware of the dietary values ​​of their food. To expand the positive effects (Making people happy):1. Changing the music genre in stores to a fast-paced and upbeat tempo as it not only helps to cheer up customers but also helps to increase productivity and allow people to eat faster and free up seats, killing two birds in one stone.2. Have loyalty programs. For example, reward points can be exchanged for free healthy snacks, and when customers receive “rewards,” they tend to be happy.