So, in His goodness and love, God wants sinning Christians to hurt badly enough to change. Often the primary reason for their poor self-image is that they have a worldly value system by which they measure themselves. The world says that you must be wealthy, powerful, beautiful, intelligent, an outstanding musician, a good athlete, some type of prominent person, or you just do not measure up. After being raised in the influence of the world, which often includes large daily doses of TV, many Christians develop this same value system. In addition, too often, individual Christians, parents, the church and parachurch organizations unwittingly teach the same worldly value system.
Christian parents can help by modelling and teaching a biblical value system.
But if parents have a worldly value system, most likely their children will develop a worldly value system too. Another cause of a poor self-image in children, and later when they become adults, is nonacceptance of their childhood accomplishments by their parents. The work of a child should be judged on the abilities of that child and his physical and mental development. Many who have been raised without having their parents' approval of their deeds also have a problem in being able to believe that they can please God. Of course, this does not mean that He approves of sinful behavior.