Effective ways to set fitness goals include using the SMART criteria, which stands for Specific, Measurable, Achievable, Relevant, and Time-bound. This helps clarify what you want to accomplish and provides a roadmap to reach those goals. Additionally, consider starting with short-term goals to build momentum and enhance motivation. Regularly reassess and adjust your goals to reflect progress and maintain engagement in your fitness journey. Finally, incorporating accountability through workout partners or personal trainers can further support goal achievement.