If "Christian" means Christ follower, and Christ said "So in everything, do to others as...?

Jesus says,

"Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven, but only the one who does the will of my Father who is in heaven." Matt 7:21

Some Christians will end up in HELL. Those are not my words or opinion. Those are the words of Jesus.

If we stumble, we need to repent right away and do everything in our power to not fall again.

Even little children learn to ride a bike by expecting to stay upright, not expecting to fall. Why are Christians so abusive of God's grace, claiming they will always fall?? The grace of God is to teach us OBEDIENCE.

Titus 2:11 "For the grace of God has appeared, [a]bringing salvation to all men, 12 [b]instructing us to deny ungodliness and worldly desires and to live sensibly, righteously and godly in the present age,"

A Christ follower has chosen to emulate Jesus. The assumption of most people would be that following is not a perfect affair. The Disciples were certainly Christ followers, and yet scripture takes pains to point out that they were not always correct, and were sometimes even wrong about their actions. Plainly that suggests that followers of Christ are not expected to be perfect emulators.

Following Jesus doesn't make anyone perfect, but it gives a pattern that has changed many lives in dramatic ways. Nothing to sneeze at!

If humans could be righteous by our own efforts, we wouldn't need a Savior.

When someone sincerely surrenders ownership of their life to Christ as a faith response to His gospel, they receive the indwelling of the Holy Spirit. The Holy Spirit influences the Christian's life to trend towards righteousness and away from sin. But sanctification is a process. The "fruit of the Spirit" (i.e. love peace joy goodness faith gentleness kindness patience self-control) are called "fruit" because they grow - they don't just appear at the point of salvation.

We all have baggage leftover from our association with the world. This is why we look forward to the day our heavenly spirit will be raised in incorruption, glory and power (2 Cor 15:42-49), when we attain immortality and death is "swallowed up in victory" (1 Cor 15:50-56).

2 Corinthians 5:1-4

5 For we know that if our earthly house, this tent, is destroyed, we have a building from God, a house not made with hands, eternal in the heavens. 2 For in this we groan, earnestly desiring to be clothed with our habitation which is from heaven, 3 if indeed, having been clothed, we shall not be found naked. 4 For we who are in this tent groan, being burdened, not because we want to be unclothed, but further clothed, that mortality may be swallowed up by life.

Every Christian does things from time to time that aren't worshipful of the Lord Jesus Christ, but that's because the human sin nature will not release its hold on us.

If the person has accepted Jesus death on the cross as forgiveness of their sins and have asked Jesus to save them, then they are Christian and when doing the opposite of what Jesus says to do, they are still Christian only a disobedient Christian

no

christ said keep my commandments

we follow his commandments

Luke 6:31 [Full Chapter]

And as ye would that men should do to you, do ye also to them likewise.

YES WE ARE NOT PERFECT....THAT IS WHY JESUS TOLD US TO DO COMMUNION...TO BE FORGIVEN.