Heavenly Source

But of him are ye in Christ Jesus, who of God is made unto us wisdom, and righteousness, and sanctification, and redemption:
1 Corinthians 2:30

You will be completely free to rest in your grace walk when you understand that it isn't up to you to become a better person by trying hard to do the right things. It is by your Father in Heaven that your in Christ Jesus. Jesus has become your wisdom, righteousness, Sanctification, and redemption. Your only role is to believe in that reality and rest in Him, refusing to struggle to improve yourself.
  This doesn't mean your life is passive. Rather, your lifestyle is one in which you accepted the fact that Jesus has done for you all the things you couldn't do in a lifetime of religious commitment and effort. Learn to focus on what He has done and thank Him for His finished work. To the extend that you rest in the reality of what He the extend that you rest in the reality of what He has already done in you, your experience will increasingly conform to that reality, and you will see your lifestyle be transformed. However, the change won't come by self-effort. It will be by the operation of His grace within you.