Romans 2:21-22

New International Version (NIV)

²¹ you, then, who teach others, do you not teach yourself? You who preach against stealing, do you steal? ²² You who say that people should not commit adultery, do you commit adultery? You who abhor idols, do you rob temples?

It's hard to imagine someone consciously choosing to ignore their own advice. If you're going to actively insist that other people do what you tell them to, it seems natural that others would expect you to do the same. No one likes their behavior criticized by a hypocrite. Like Jesus said (Matt 7:5), look first to changing your own behavior before trying to change everyone else's. If you haven't done so, then don't put yourself in a position of leadership. Stay in the back, following the true leaders and focusing on repenting for your own sins and changing your behavior to avoid sinning in the future.