To change your heart, as I have, and repeated here, is to change the ruling preference of your mind. What is needed is that their will must be properly influenced, that they must reject sin and obedience to anything else, and prefer God. The question then is how should your will be influenced? By what process is it reasonable to expect to influence your mind? Until their will is right, it will be in vain to expect felt emotions of true love of God, of repentance and of faith. These feelings, which you may be seeking, and towards which you are trying to force yourself, do not need to wait until the will is submitted, until the ruling preference of the mind is changed.