Things to do in one lifetime:
1) Inspire others
2) Receive love
3) Understand love
4) Demonstrate love
No matter how badly you've messed up, your sin is never bigger than God's saving love. Think of it this way: Nothing you can do can make God love you more or love you less. He loves you because He is love. And His love for you never changes. He loves you with an everlasting love (Jeremiah 31:3)