I really enjoy being nice to people.

Initiating friendly small talk with my grocery-store cashier or graciously showing patience to my overworked waitress brings me happiness. There's something about sharing a laugh with a stranger or bringing a smile to a person's face that is nearly exhilarating. I love it. I walk away with an extra skip in my step and a part of me thinks, "I love being a Christian!"

In my mind, whenever I am kind to someone for no reason at all, whenever I extend mercy at a time when others might not, whenever I inquire about the day of the telemarketer who calls—I equate all these things with the Christian life. Christ compels us to love our neighbors and our enemies—to love everyone—so the warm feeling I get from these encounters must be related to Jesus, I reason. It is the part of my heart that is conformed to his.

And perhaps that is true. Perhaps Jesus was just as friendly and happy-go-lucky with everyone he crossed. But I would be lying if I said that this mindset can't be deceptive. Behind my joy is also a deep desire to be liked by everyone I meet. While I genuinely enjoy encouraging strangers because I do care about them, I also want people to think I'm nice and funny and kind. It builds me up inside. It makes me feel like a good person.

I know that not everyone is like me. Some people don't care what everyone thinks about them. Others are so profoundly introverted that it is difficult to engage in the smallest exchanges with strangers. But I am quite sure there are other Christians like me, and there's a part of me that wonders if my personality type gravitates toward the church. After all, the church affirms my natural inclinations. When I treat people the way I would treat people anyway (Christian or not), I can call that behavior Christian. I can credit spiritual fruit to myself even when there is no actual spiritual growth.

In his book Mere Christianity, C. S. Lewis wrote of this problem. He warned of the "fatal mistake" of believing that Christianity demands niceness alone. He believed that "a certain level of good conduct comes fairly easily" to some people, and he attributed this to what he called "natural causes." Lewis therefore concluded that God does not look at an individual's nice or nasty temperament the way we do. We might see an ornery Christian and call her a hypocrite, whereas a kind and gentle Christian incites our praise. What we fail to consider is where each person started. Who were they before they knew Christ? If they were just as nice and friendly prior to salvation as they were following, then their sanctification will look different from that of the temperamental Christian.

While the grumpy Christian may seem to be in greater need of grace, Lewis warned that nice Christians are in greater peril. Where there is no perceived need, we depend less on God. If niceness comes naturally to us, and niceness is the goal, then we are less desperate for God.

That is a great danger. Given that people-pleasing is a form of idolatry, it can be easily hidden within the realm of the Christian community. It can be passed off as Christ-likeness when it is, in fact, sin. That is not to say that being kind to others is wrong, but that we must scrutinize our motives. On this front, Jesus offered some helpful words in Luke 6:32–36:

"If you love only those who love you, why should you get credit for that? Even sinners love those who love them! And if you do good only to those who do good to you, why should you get credit? Even sinners do that much! And if you lend money only to those who can repay you, why should you get credit? Even sinners will lend to other sinners for a full return.

"Love your enemies! Do good to them. Lend to them without expecting to be repaid. Then your reward from heaven will be very great, and you will truly be acting as children of the Most High, for he is kind to those who are unthankful and wicked. You must be compassionate, just as your Father is compassionate."

Even in loving my enemies there is a temptation to people-please because I cannot stand the thought of someone disliking me. Yet admitting that temptation is the first step toward loving my neighbors and enemies for the right reason: by the grace of God for the glory of God.

At the heart of people-pleasing and a Christianity measured by niceness is a works righteousness that is antithetical to the gospel. The ultimate cure for this tendency is total dependence on God. Those for whom friendliness is harder are more likely to depend on God in this area; the rest of us are less so. That's why it is crucial to remember the final aim of the Christian life is not niceness but complete and total transformation, as Lewis wrote: "God became man to turn creatures into sons; not simply to produce better men of the old kind but to produce a new kind of man."

That is a work that God alone is capable of achieving.

Sharon Hodde Miller is a blogger, freelance writer, and PhD candidate who lives in the Chicago area. You can find her at her blog, She Worships.