The best way to track progress in a fitness journey is through a combination of quantitative and qualitative measures. This includes regularly recording performance metrics such as weight, body measurements, and fitness assessments. Keeping a workout log can help monitor strength gains and endurance improvements. Additionally, self-assessing how one feels physically and mentally can provide insights into overall progress. Setting specific, achievable goals and periodically reevaluating them ensures continued motivation and adjustment of one's fitness regimen.