The issue is not your niceness compared to someone else's. The real question is: "How much nicer would a person be if he let God manage his niceness?"
Who's the Director?
Why do I need Christianity if I'm already a nice person?
Niceness is not a person's gift to God, but God's gift to the person.
Paradoxically, when one offers it back to God, then it begins to really be theirs.
It cost God nothing to give us niceness, but to free us from self-addiction cost Him crucifixion.
We can get caught up thinking God is asking us to prove ourselves before we get to him, but really he is inviting us to experience his love. It's about getting the gift of a person.
For example, if a parent said: "you ought to consider getting married", wouldn't it be bizarre if the son said "Why? I'm a nice person. I've never killed anyone!"
So life in an invite into a full love, that is not flattened to mere niceness.
It includes both soft love (niceness) and hard love (letting go), which are best together.
Perfect Niceness and More
Seek not to take control, for that is My job. It is only yours to carry out what I send you to do, not in your own power, for you are indeed powerless to carry out My tasks. I need full surrender so I can make your life an offering to others.
Let Me work in you. Give Me just the smallest part of you and I can use that for I know where to go in you and make you a workable vessel for this Kingdom.
Don’t think you need perfection for it is My perfection, My strength, My ability that can only work through a surrendered vessel.