None of us are without sin. It is reported in Sahih Muslim that: Abu Ayyub Ansari reported that Allah's Messenger (may peace and blessings be upon him) said: If you were not to commit sins, Allah would have swept you out of existence and would have replaced you by another people who have committed sin, and then asked forgiveness from Allah, and He would have granted them pardon.
What then can we do - as striving to draw near to Allah and seeking Allah's Mercy? Some reminders:
The Prophet (peace and blessings be upon him) said, “Whoever fasts Ramadan out of faith and with sincerity, he will have all his previous sins forgiven.” [Al-Bukhari & Muslim].
The Messenger of Allah (peace and blessings be upon him) said, “Whoever performs ablution with perfection, his sins will come out from his body, even from under his nails.” [Muslim]
The Prophet (peace and blessings be upon him) said, “When you hear the Athan, say the following, 'Ashhadu An La Ilaha Illa Allah wa Anna Mohammadan Rasoolu Allah. Radhiytu Billahi Rabban wa Bi-Mohammaden Rasoolan wa Bil-Islami Deenan.' Whoever says this will have his sins forgiven.” [Muslim].
[Meaning: I testify that there is no god worthy of worship except Allah and that Mohammad is the Messenger of Allah. I accept Allah as my Lord and accept Mohammad as my Messenger and I accept Islam as my religion.]