The average person is a mechanism which works against itself in a self-defeating way. Whether we like it or not, whatever we do physically, emotionally and mentally is, in a very high percentage of cases, self-defeating. The success of darkness lies in the fact that we do not often realize this.
Are you doing things which are against your body? Are you doing things which are against your heart? You have thousands of anti-survival thoughts, which are against light, beauty, goodness and truth. These thoughts, emotions and actions create self-defeating conditions in your mechanism.