Yes, you will be a new creation in Christ! 2 Cor 5:17 states "Therefore if any man be in Christ, he is new creature: old things are passed away: behold, all things are become new."
We come with some stinking thinking, but Romans 12:2 says we will be "transformed by the renewing of our minds." The Spirit of God will teach us, convict us and empower us to live a righteous life in Jesus.
2 Cor 5:21 states "For he hath made him to be sin for us, who knew no sin: that we might be made the righteousness of God in him." Romans 8:29 says God's purpose is that we "be conformed to the image of his Son." When God is done, we will be looking mighty fine!