Of course it's somebody else's fault. Telling himself that, makes it easier to be angry, to feel ripped off. He's the victim of his whole existence and taking responsibility for his own life is like a walk across the ice to the south pole.
We call it having an external locus of control. Psychological terms bring distance and a framework and they're an acceptable way to judge people.
How do we ever escape the power of sin?
Being human can feel like a trap, that we have to live out our passions or our mess. That no matter what we do, we'll always end up with a raw deal or having hurt someone.
But here is the truth. We may have a multitude of pressures pushing us to sin, but we don't have to. God's spirit in us frees us from the have-to of sin.
Therefore, dear brothers and sisters,
you have no obligation to do what your sinful nature urges you to do. For if you live by its dictates, you will die.
But if through the power of the Spirit you put to death the deeds of your sinful nature, you will live. Romans 8:12-13.