You don't get what you deserve because God is not a punishing God. What you get is what you create based on your beliefs.
If you believe He is a punishing God who will withhold abundance, this is what you will get. If you believe he is Love and that the Kingdom is available to you, this is what you will get. In order to believe the latter, you only need to believe that you are worthy and without sin. There is nothing you need to do except drop the beliefs you hold about yourself that are false and not of God.