When we are born we are all born into different circumstances. Our actions basically dictates the state of our children. For example, if a family of Satanists conceive a child, there is a great chance that the child will be influenced by demonic spirits. The same with drug addicts, people with diseases and also abortionists. In many of these cases the children may not even have a chance to live.
2. The demonic influences that many people are born under can gravely effect their lives. These are merely imaginations and strongholds that people must remove in order to think according to the scriptures.
3. Many people that are saved do not live according to the will of God because they have not changed their thought process. Because of
free will, our thoughts and actions are ours to command. God doesn't change our minds, he just removes strongholds and imaginations that may hinder our thoughts and gives us a fair chance to choose him. Rom. 8:13 For if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.
4. Some Christians ask God to change their thoughts and minds for them but God will not do that. He gives us free will to choose His way or our own way. But we must suffer the consequences of choosing our own will.