Assalam alaykum,
We often tend to forget the importance of the simple yet powerful Du'a/Supplication of ISTIGHFAR... ie the saying or recital of 'Astaghfirullah' ( I Seek forgiveness of Allah ). Some of the virtues and benefits of Istighfar include:--
1) It opens the door of Knowledge, Mercy and Sustenance.
2) Istighfar also removes anxiety and Du'as are answered.
3) Reciting Astaghfirullah helps us to calm ourselves and wipes out variety of worldly worries
from our body and mind.
Ibn abbas, may Allah be pleased with him, reported that the Messenger of Allah, may Allah bless and greet him, said:--
''IF ANYONE CONSTANTLY SEEKS PARDON (from Allah), ALLAH WILL APPOINT
FOR HIM A WAY OUT OF EVERY DISTRESS AND A RELIEF FROM EVERY ANXIETY,
AND WILL PROVIDE SUSTENANCE FOR HIM FROM WHERE HE EXPECTS NOT''. [Abu Dawud].
In view of this, we should all include reciting lots of ISTIGHFAR [Saying: 'Astaghfirullah'] in our daily Zikr, at least 100 times, in the mornings and evenings when we come to Remember Allah.