Humans imbued with high internal locus of control have better self-restrain in behavioral pattern, tend to be more politically oriented, and are more likely to have the power of influence over other people, than people with a high external locus of control. Conditioned souls with a high internal locus of control are more likely to be optimistic and hopeful people who assume that their efforts will be successful.  Vaidhi sadhana bhakti does a lot of justice in that wise.