Among the causes of having worries disappear and sins forgiven is sending ṣalāh (supplications for peace) upon the Prophet ﷺ, and the effect of sending ṣalāh upon him on Friday is greatest. The Prophet ﷺ said to the one who would send ṣalāh upon him, “You will be freed of your worries and your sins will be forgiven.”

من أسباب زوال الهموم وغفران الذنوب الصلاة على النبي ﷺ، ويوم الجمعة يكون أثر الصلاة أعظم، قال النبي ﷺ للمصلي عليه (تُكفى همك ويُغفر لك ذنبك)