and can't avoid doing sin, please advise me.
Imam Husayn ibn ‘Alī ibn Abī Ṭālib (as) said:
"If you can do these five things, then commit sin as much you like.
First of all: don’t eat the sustenance of God
and commit sin as much you like.
Second: go beyond the domain of God
and commit sin as much you like.
Third: seek a site where God can not observe you
and commit sin as much you like.
Fourth :if the Angel of death comes to you to take away your soul,
expel him away from yourself and commit sin as much you like.
Fifth: If the Angel of Hell was about to throw you into the hell-fire,
stop him and commit sin as much you like".
[Reference: Bihar al- Anwar, Vol. 78, P. 126]