I've got a few I quite like.
Luke 6:37 - "Do not judge, and you will not be judged. Do not condemn, and you will not be condemned. Forgive, and you will be forgiven."
1 Corinthians 13:4 - "Love is patient, love is kind. It does not envy, it does not boast, it is not proud."
2 Timothy 4:7 - "I have fought a good fight, I have finished my course, I have kept the faith." (Personally, if I can say that at the end of my days I'll be a content man.
Psalm 23 on the whole is good as well.