Characteristics a true Christian should strive for:

1. Humility
2. Meekness
3. Love (without hyposcrisy)
4. Patience
5. Maker of peace
6. Kindess
7. Mourner over sin
8. Hunger and thirst after righteousness
9. Purity of heart
10. Longsuffering
11. Mercy
12. Joy
13. Faithfulness in serving God
14. Gentleness
15. Seeker of God
16. Humility
17. Renewal of the mind
18. Proper use of spiritual gifts
19. Abhorer of evil
20. Honoring others above self
21. Brotherly affection
22. Diligence
23. Constant in prayer
24. Hospitality
25. Patience in tribulation
26. Distributer to the needs of the saints
27. Blessing those who persecute you
28. Repaying evil with good
29. Worshiper of God alone
30. Leaver of vengeance to God
31. Offering self as a living sacrifice
32. Doing what is honorable
33. Forgiveness
34. Sacrificial giving
35. Self-control
36. Obedience
37. Not envying
38. Loving neighbor as yourself
39. Standing firm in faith
40. Having the mind of Christ
41. Being against worldliness
42. Havng eyes fixed on Christ
43. Applying Scriptures to life
44. Discernment

Of couse one cannot achieve any of these things without the help of the Holy Spirit, so be diligent in prayer as well!
By the way, the list was made by the ladies of Grace Fellowship Church during a Bible study. :)
God bless,
Emily