Quit looking at your sanctification to prove to yourself (and to others) that you are a Christian.
You are a Christian because of the gospel. God found you. God saved you. God changed you.
You are united to Christ in his death, burial and resurrection. Everything that Jesus is you now are, too. Since Jesus is holy, so are you by virtue of your union in him. And it’s the Holy Spirit in you that continues to make you holy.
What did you do to accomplish that? Nothing. It’s a gift.
What are you doing now to sustain this? Nothing. It’s a gift.
What are you doing to insure your safe arrival in heaven? Nothing. It’s a gift.
You’re probably thinking by now, “But wait a minute, what about obedience?”
What about it?
Are you obeying God because you think it’s your way of working toward holiness? Are you obeying God because if you don’t you feel guilty? Are you obeying God because it’s your duty to do so, otherwise how can you call yourself a Christian?
You are a Christian because of what God has done to you. You are a Christian because you are in Christ. God put you there. And you are holy for the same reasons.
It’s out of this new relationship in Christ that we live out our holiness. How? By living a life of gratitude to God and loving our neighbor.
And lo and behold, we are obeying the two greatest commandments!
Quit taking your spiritual temperature. Look to Jesus who has done it all.