The statement "winning is never enough" suggests that for some individuals, the experience of winning is not sufficient to meet their desires or needs. Winning may be a powerful motivator for some people, but it is not necessarily the only thing that drives them.
People who feel that winning is never enough may be driven by a desire for personal growth or self-improvement, and they may see winning as just one step in a larger journey. Alternatively, they may be motivated by a sense of competition, seeking out new challenges and striving to be the best in their field or domain.
It's also possible that individuals who feel that winning is never enough may struggle with feelings of insecurity or inadequacy, and winning may serve as a temporary salve to those feelings. In such cases, winning may provide a short-term boost in confidence, but it may not be enough to address the underlying issues.