Setting realistic goals significantly influences long-term fitness success by providing a clear roadmap for achieving desired outcomes. When individuals establish feasible, measurable, and time-bound goals, they create a sense of accountability and maintain motivation. Realistic goals foster consistent progress, helping to build confidence and reinforcing positive behaviors. They also minimize feelings of overwhelm and frustration that can arise from unattainable expectations. By regularly reassessing and adjusting goals, individuals can stay engaged in their fitness journey, ultimately leading to sustainable changes and enhanced overall health.