The Seven Deadly Sins do not include things like murdering innocent children, starting a war, or cheating widows out of their life savings. Instead, the Seven Deadly Sins, as ominous as they sound, are the little things that people do that get out of control. They are things that are valuable in the right place and in the right amount at the right time, but like that maintenance machinery left on the runway, they are destructive when out of place and encountered at a hundred miles an hour in a rainstorm. The sin that is considered the worst is pride. By that, they mean this is the one that is at the root of all of the rest.
Pride is what makes the other sins possible.
Pride, at base, is nothing more than good, healthy self-love. Therefore, I am worthwhile. Few understandings are more valuable than that. The problem occurs when healthy self-love escalates out of control. Pride keeps us from getting the help we need.