Do I Offer Dishonorable Sacrifices?

Malachi 1: 6c-9"But you ask, 'How have we ever shown contempt for your name?'  "You have shown contempt by offering defiled sacrifices on my altar. "Then you ask, 'How have we defiled the sacrifices? ' "You defile them by saying the altar of the LORD deserves no respect. When you give blind animals as sacrifices, isn't that wrong? And isn't it wrong to offer animals that are crippled and diseased? Try giving gifts like that to your governor, and see how pleased he is!" says the LORD of Heaven's Armies. "Go ahead, beg God to be merciful to you! But when you bring that kind of offering, why should he show you any favor at all?" asks the LORD of Heaven's Armies."

Sweet Lord,
What kind of sacrifices am I bringing to you in my life?  Am I willing to sacrifice my time, talent and treasure to the point of being seen as an acceptable sacrifice, or am Ioffering You my leftovers?  These are quite hard questions for me to answer right now.  I want to offer You the very BEST always.  I believe I do in my work at school, and my work at home...doing all as unto You.  But I wonder about my "inside" life.
Lord, search me and know my heart.  Reveal to me the sins I need to confess and of which I need to repent.  Please, Lord!  I want to please You in EVERY WAY!