Repentance is not about perfection; repentance is about heading in a new direction. While you will commit sins as a christian, you will not sin with joy. You happily give up your sins out of gratitude for the one who died in payment for your sins.
"You need to remember His promise that you're not guilty anymore. Stop wallowing in a pigsty that doesn't exist. Your sins have been removed from you as far as the east is from the west. Don't feel guilty; feel forgiven." -13 Reasons Why You Should Not Commit Suicide
"Your ancestors didn't climb out of goo, go through the zoo, and eventually become you. God custom made you in your mother's womb." -13 Reasons Why You Should Not Commit Suicide
"God loves to save bad people. He doesn't save good people because there are no good people; we have all done shameful things. Here is God's math: the more shameful you are, the more glory He receives for removing your shame." -13 Reasons Why You Should Not Commit Suicide
"When the storms of life swirl around you, remember, your biggest problem has been solved. Your rotten circumstances pale in comparison to facing the wrath of God and being tossed into an eternal lake of fire." -13 Reasons Why You Should Not Commit Suicide
"If you feel guilty, it's because you are guilty. The Bible offers the only solution to your guilt problem." -13 Reasons Why You Should Not Commit Suicide