There is a deep limitation set by our past Karma. This past Karma is also a great blockage for our spiritual progress. Swami Vivekananda says that in his poem he says, chains though of gold are not less strong to bind. Here comes the role of God. There's only one who can set us free from Karma. The redemption, the redeemer, the saver,. It's put in the language of original sin but basically it's the same thing.