Negativity bias can significantly affect fitness goals by causing individuals to focus more on setbacks and perceived failures rather than their progress. This psychological tendency leads to a skewed perception of self-efficacy, making individuals more likely to become discouraged and abandon their fitness pursuits. Recognizing achievements, however small, can counteract this bias and foster a more positive outlook. Building resilience through positive self-talk and surrounding oneself with supportive communities can further mitigate the effects of negativity bias, making it easier to maintain motivation and persistence in achieving fitness objectives.