Repentance is to realize that you put something before God, that you've betrayed your king, the one person who gives you your purpose and fulfillment.  It is to finally open your eyes and see the filth, to cry out in anguish, and beg him to cast it away from you, far away.  You want to be clean.

It is to know that he's already paid for your sin and cast them away; you've already been made clean, and you are still.  It is to know that he's given you a new heart, the essence of the 'you' he created you to be, of all your true potential, of everything that would be impossible for you without Christ.

It is to stand with newfound determination and direction and hope.  It is to renew your alliance to your king.  It is to love and follow him once again, yes, and all the more.