Sayyidi Habib `Umar bin Hafiz (may Allah preserve him and benefit us by him) recommends reading the following 40,000 times in the the month of Sha`ban:

يَا حَيُّ يَا قَيُّومُ لا إِلَهَ إِلَّا أَنْتَ سُبْحَانَكَ إِنِّي كُنْتُ مِنْ الْظَّالِمِين

Ya Hayyu ya Qayyum la ilaha illa anta subhanaka inni kuntu min az-zalimin

‘O Living, O Self-Subsistent! There is no deity other than You. Transcendent are You, truly I am one of the wrongdoers.’