Answer:
dysthymic disorder
Step-by-step explanation:
Dysthymic disorder: In abnormal psychology, the term "dysthymic disorder" is described as one of the mood disorders that is distinguished by an individual having "mild depressive symptoms" that lasts for two years at least.
Symptom: Sadness, fatigue, loss of pleasure in different activities, trouble sleeping, and difficulty concentrating, etc.
In the question above, the given statement represents dysthymic disorder.