Self Condemnation

So...I'm not very good at extending grace to myself.  I sometimes extend grace to others to a fault, which I find fascinating.  In talking to God about my lack of grace for my own mistakes, He led me to John 3:16.  Appropriate, right?  "For God so loved the world that he gave his one and only son, that whoever believes in him shall not perish but have everlasting life." And on to verse 17..."For God did not send his son into the world to condemn the world, but to save it."  This is obviously the next part of my journey with Jesus, learning to extend grace to myself.  I have set high standards for myself, knowing full well that I am human.  I just don't always do very well with my own humanity and I disappoint myself.  I know that God is not disappointed in me and I know that He has grace enough to cover me, and does, so why do I condemn myself? I am beginning to think on how my lack of grace for self affects my relationship with Jesus.  I don't have answers yet, but I have been primed for growth.  And now to set the Spirit to work.  Alas, sanctification is a long journey, but praise the Lord for not giving up on me.