In order to develop single-minded devotion, the mind must be trained. It is natural for the mind to wander towards gossip, politics, sensational issues, worldly comforts, etc. When your mind wanders, draw it back to the lotus feet or the image of Bhagavan. Eventually, this tendency diminishes. Positive qualities such as faith, patience, tolerance, fasting, satwik diet, and brahmacharya can help develop a single-minded focus on Bhagavan.
Durga Devi represents the combined power of all the Devas. When Devas were ousted from e Swarga by Mahishasura, their anger came out of their bodies, merged together, and became a mountain of fire. This later assumed a feminine form as Durga Devi. She manifested to eliminate the evil Mahishasura and protect the Devas.
अमलकमलसंस्था तद्रजपुञ्जवर्णा करकमलधृतेष्टाऽभीतियुग्माम्बुजा च मणिमकुटविचित्राऽलङ्कृता कल्पजातै- र्भवतु भुवनमाता सन्ततं श्रीः श्रियै वः । amalakamalasamsthaa tadrajapunjavarnaa karakamaladhri'tesht'aa'bheetiyugmaambujaa cha manimakut'avichitraa'lankri'taa kalpajaatai- rbhavatu bhuvanamaataa sant....
अमलकमलसंस्था तद्रजपुञ्जवर्णा
करकमलधृतेष्टाऽभीतियुग्माम्बुजा च
मणिमकुटविचित्राऽलङ्कृता कल्पजातै-
र्भवतु भुवनमाता सन्ततं श्रीः श्रियै वः ।
amalakamalasamsthaa tadrajapunjavarnaa
karakamaladhri'tesht'aa'bheetiyugmaambujaa cha
manimakut'avichitraa'lankri'taa kalpajaatai-
rbhavatu bhuvanamaataa santatam shreeh' shriyai vah' .