If everyone was a "True Christian" we would have all stoned each other to death centuries ago, or found some other means to kill all blasphemers and other "sinners", because one person's brand of "Christianity" isn't EVERY person's brand of "Christianity".Then I suggest you test what seems like truth to you.
If everyone was a True Christian™ we wouldn't need locks on homes, bicycles or cars!
Catholics and Protestants killing each other, when their Lord commanded "Put down the sword! He who lives by the sword, dies by it!" and "Blessed are the peacemakers!" would make Jesus Christ say they aren't True Christians™.