The Messenger of Allah (the Peace and Blessings of Allah be upon him) said: By Allah, I seek forgiveness and repent to Allah, more than seventy times a day.
He (the Peace and Blessings of Allah be upon him) also said: O People, Repent! Verily I repent to Allah, a hundred times a day.
أَسْتَغْفِرُ اللهَ الَّذِي لَا إِلَهَ إلَّا هُوَ الحَيُّ القَيّوُمُ وأَتُوبُ إِلَيهِ
He (the Peace and Blessings of Allah be upon him) also said: Whoever says: I seek Allah’s forgiveness, besides whom, none has the right to be worshipped except He, The Ever Living, The Self-Subsisting and Supporter of all, and I turn to Him in repentance. Allah would forgive him even if he was one who fled during the advance of an army.
He (the Peace and Blessings of Allah be upon him) said: The nearest the Lord comes to His servant is in the middle of the night, so if you are able to be of those who remember Allah at that time, then be so.
He (the Peace and Blessings of Allah be upon him) also said: The nearest a servant is to his Lord is when he is prostrating, so supplicate much therein.
He (the Peace and Blessings of Allah be upon him) also said: verily my heart becomes preoccupied, and verily I seek Allah’s forgiveness a hundred times a day.