No, fear of success is not automatically a disorder. It is a concept studied in psychology, and on its own it is better understood as a pattern of hesitation than as a diagnosis.
Hesitation can come from anxiety about being evaluated, taking on responsibility, changing relationships, or the costs of achievement. It can also reflect practical risks, exhaustion, or conflicting priorities.
If the fear is persistent and significantly interferes with your work or wellbeing, consider speaking with a qualified mental-health professional.
https://www.wisdom.vedaspark.com/blogs/why-does-life-feel-empty-even-when-everything-is-going-well
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