Durga Chalisa is one of the most popular prayers dedicated to Goddess Durga in forty verses (Chalisa). This particular text of Durga Chalisa is in Hindi. You can download it free or read online.
Durga Chalisa explains the qualities and forms of Durga. It is considered highly meritorious to read and listen to it. The belief is that constant chanting of the prayer helps in developing confidence. It also brings in a renewed level of energy.
Link - Durga Chalisa Hindi in pdf