In every single one of us there is a propensity to draw near to Jesus with all of our heart and to pull away at the same time. If it was not for the power of the Holy Spirit it would be impossible to serve God. It is better to take the promises of God and bring them back to Him in prayer than to make vows that we know we could never keep in our own strength. The key is to totally understand that it is not what we can do for Jesus but what He did and continues to do for us. With man it is impossible, but with God all things are possible!