It is one thing to confess that for which you are responsible; it is another to blame yourself for another person’s actions.  We are certainly affected by other’s actions, in sometimes life changing ways, but it is not mentally or spiritually healthy to blame yourself for these things.  When you do, it gets you stuck in a bad place emotionally and spiritually.  Give the other person and the situation to God and move on.  God will bring your through and bring you out to a better place.

Jesus said, “You’re asking the wrong question. You’re looking for someone to blame. There is no such cause-effect here. Look instead for what God can do.” John 9:3 (MSG)