HOW CAN I EARN BACK YOUR TRUST?

I look back on all that I took for granted, and I only wish that I had appreciated it, and I know that if I had that back, I would work to keep it. I wouldn't push it away like I did then. I would ask in every moment of the radiance of your love. I want a chance to love you the right way, but I need you to let me in. The distance between us tears at my heart. It is there even when I am in your arms. Yes, I have suffered for my sins, the greatest suffering I have ever known: feeling as if I have lost you and your love. I am asking that you forgive me.
We've decided to stay together, I'm glad of that, but what I really want is the chance to do it right, to make it stronger and better than it ever was. I want the chance to prove that I've changed, that I can be trustworthy, honest, open, giving, and understanding. I know I have a lot to do before I earn back that trust, but I'd like the chance to try. Love is what makes the difficult easy, and the impossible possible. I know that I am asking for the impossible- to be forgiven.
I look at you now with new eyes. I have a new appreciation for the wonderful things about you that once I took for granted, and the beauty of a face that reflects both the man I love and my most loyal and dearest friend. No longer can I take you for granted, you are too important to me, too precious on every level; my best friend, the man I love; the one whose heart I once held in my hands. If only I had treated it right then, I know that I would hold it still.
The words of a song keep floating through my head, "could have been a perfect love? I’m still trying. I know you’ve lost your faith in me, now I’m crying." Even though you are in my arms, I know that you don't trust me with your heart and it hurts me.