Many Christians live by the phrase, "I am a sinner saved by grace." Do you know that phrase is not even in the Bible? Yes, before you believe in Jesus you were considered a sinner but once you believed, God calls you a saint indwelt with the Holy Spirit.
Stop calling yourself a sinner. Calling yourself this just excuses your sin. Call yourself what God calls you..His child, chosen, holy, forgiven, redeemed, justified, a new creature, transferred from the kingdom of darkness into the kingdom of light, and loved by a mighty God!
Don't define yourself by your past. When you believe in Jesus, you are buried with Him, raised with Him, and seated on the right hand of God with Him!!! You are definitely a new creature with the power living inside of you that raised Christ from the dead! {Ephesians 1:19,20}
If ye then be risen with Christ,
seek those things which are above,
where Christ sitteth on the right hand of God.
Set your affection on things above,
not on things on the earth.
For ye are dead,
and your life is hid with Christ in God.
When Christ, who is our life shall appear,
then shall ye also appear with him in glory.