In a discipleship class I teach on Sunday evenings at my brother's church, a woman remarked, "If we say we've matured, that we've advanced spiritually, and are farther along than other believers, don't we come off as arrogant, and sort of self-righteous?"
I replied: "If we are discipling others into a deeper walk with God, into spiritual maturity, those we disciple are going to want to know that we are living in the experience with God into which we're discipling them."
It's a pet-peeve of mine that Bible preachers and teachers prescribe certain spiritual principles and courses of action to fellow believers and then say things like, "But I'm struggling in this area myself," or "I'm still working this out, as well," or "I've got my own struggles and failures." Look, if you (the general "you," not you specifically, Christ_empowered) aren't living in the spiritual success you've just taught others is possible, and to whom you've prescribed a process whereby they can achieve that success, keep your mouth shut! My first thought when I hear Bible preachers and teachers admit to not living consistently and completely in the things they teach is: Aren't you declaring yourself a hypocrite? Aren't you undercutting the very principles and actions you say will "work" spiritually? If they haven't brought you to the spiritual success you say is possible, don't prescribe them to me!
Anyway, it's not wrong to claim spiritual growth has happened in your life. In fact, if you can't, there's something very wrong between you and God. Where there's life, there's always growth and change. If the life of Christ is in you, there will be - there must be - a corresponding change in you. Don't be afraid to talk about that change! Others need to hear that the transformation God says is possible, actually occurs in the lives of His children (and, of course, they need to be able to see it, too).
2 Corinthians 3:18 (NASB)
18 But we all, with unveiled face, beholding as in a mirror the glory of the Lord, are being transformed into the same image from glory to glory, just as from the Lord, the Spirit.
Galatians 5:22-24 (NASB)
22 But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness,
23 gentleness, self-control; against such things there is no law.
24 Now those who belong to Christ Jesus have crucified the flesh with its passions and desires.
Ephesians 5:9 (NASB)
9 (for the fruit of the Light consists in all goodness and righteousness and truth),
Hebrews 5:14 (NASB)
14 But solid food is for the mature, who because of practice have their senses trained to discern good and evil.
Hebrews 6:1 (NASB)
1 Therefore leaving the elementary teaching about the Christ, let us press on to maturity, not laying again a foundation of repentance from dead works and of faith toward God,