Football Journey: From a Dreamer to a Committed Player David Mueller started playing football at age five. Through training academies, local leagues, and challenges, he has developed strong skills, discipline, teamwork, and leadership, and continues working hard every day to reach higher levels professionally. To read our full blog, visit: https://muellerdavid.com/work/my-football-journey-from-a-5-year-old-dreamer-to-a-committed-player