The Messenger of Allah Prophet Muhammad Sallallahu Alaihi Wasallam (Peace and Blessings of Allah be upon him) said:
Allah is most generous, and he dislikes to turn away empty the hands of his slave when he raises them to him.
Worried? Fustrated? Depressed? Stressed? Turn to Allah and remember him.
Those who have faith and whose hearts find peace in the remembrance of Allah, Truly it is in the Remembrance of Allah that hearts find peace. (Quran 13:28)
Istighfar is also known as Astaghfirullah - seeking the forgiveness of Allah. Istighfar means to get strength from Allah to refrain from sin and evil and to be able to display this strength to refrain from sin. We should always seek forgiveness from Almighty Allah as He is The Most Merciful.