Romans 5:6 For when we were still without strength, in due time Christ died for the ungodly. 7 For scarcely for a righteous man will one die; yet perhaps for a good man someone would even dare to die. 8 But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us. 9 Much more then, having now been justified by His blood, we shall be saved from wrath through Him. 10 For if when we were enemies we were reconciled to God through the death of His Son, much more, having been reconciled, we shall be saved by His life. 11 And not only that, but we also rejoice in God through our Lord Jesus Christ, through whom we have now received the reconciliation. 12 NKJV
Ephesians 1:3 Praise be to the God and Father of our Lord Jesus Christ, who has blessed us in the heavenly realms with every spiritual blessing in Christ. 4 For he chose us in him before the creation of the world to be holy and blameless in his sight. In love 5 he predestined us to be adopted as his sons through Jesus Christ, in accordance with his pleasure and will– 6 to the praise of his glorious grace, which he has freely given us in the One he loves. 7 In him we have redemption through his blood, the forgiveness of sins, in accordance with the riches of God’s grace 8 that he lavished on us with all wisdom and understanding. 9 And he made known to us the mystery of his will according to his good pleasure, which he purposed in Christ, 10 to be put into effect when the times will have reached their fulfillment–to bring all things in heaven and on earth together under one head, even Christ. 11 In him we were also chosen, having been predestined according to the plan of him who works out everything in conformity with the purpose of his will, 12 in order that we, who were the first to hope in Christ, might be for the praise of his glory. 13 And you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, 14 who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession–to the praise of his glory. NIV
One thing to remind yourself if you start feeling overwhelmed by your mistakes is that God knew the sins you would commit. He knew them before He chose you, before you were even born. He loves you anyway.
Of course this is not a license to go commit sin–if you see the Lord’s gift like that, you do not understand His gift at all and lack love for Him.
However, this should give us comfort when the accuser tries to make us hide from the Lord. Repent of your sin, then let it go. His sacrifice is enough. Confess, repent, praise Him.