The questions go on and on, but if we truly desire healing and change in our lives, we have to look at our belief system. Chance is going to require insight and changing some beliefs we have deep down about ourselves, others, and God. Our beliefs drive our attitude toward ourselves, others and God, and that attitude triggers our behaviors and actions. Someone who believes deep down that their parent is smart, funny, orderly but also believes that parent is a drunk, compulsive, and insulting is going to choose which of those beliefs will drive their own emotions and thus their own behaviors toward that parent.
Someone who believes they are not pretty, loveable, or are worthless will begin to live their lives looking for someone else who will make them feel like those things are untrue...never changing the belief, but only attempting to fix the behavior. They often end up with someone (addict) who will show an attachment to anyone who touches and gives themselves over to solving an addiction...because the original person would say that the addict "makes me feel loved, pretty and of some great worth." When in reality, neither person is being healed. The addict meets his need and the original person acts out without learning to heal the belief system; learning to change their beliefs about themselves without having someone else change their belief system. Only we can change our belief system...and in turn, change our destructive patterns and behaviors.
Someone who believes God is a tyrant who awaits his next opportunity to punish the sinner would naturally act out against the idea of God. He will never be able to accept Christ. Someone who believes God could never love me as I am; "not with the things I have done" will never be able to live the Christian life of joy. He will never be able to truly worship or pray.
Once we begin to change our belief systems, we can begin to heal and step away from the behaviors and problems that have destroyed so much of our lives.
I believe it has to start spiritually so that God may begin to walk us through our healing. Out of what is believed spiritually comes our morals, values, relationships, how I view myself, and others.