6.15-Transformation into a new and different person is possible. Yes.

6.15-

The more you read and meditate about Jesus the more you are transformed.

2 Corinthians 3.
⁷ But if the ministry of death, in letters engraved on stones, came ^[c]with glory, so that the sons of Israel could not look intently at the face of Moses because of the glory of his face, fading as it was, ⁸ how will the ministry of the Spirit fail to be even more with glory? ⁹ For if the ministry of condemnation has glory, much more does the ministry of righteousness abound in glory. ¹⁰ For indeed what had glory, in this case has no glory because of the glory that surpasses it. ¹¹ For if that which fades away was ^[d]with glory, much more that which remains is in glory.
¹² Therefore having such a hope, we use great boldness in our speech, ¹³ and are not like Moses, who used to put a veil over his face so that the sons of Israel would not look intently at the end of what was fading away. ¹⁴ But their minds were hardened; for until this very day at the reading of the old covenant the same veil ^[e]remains unlifted, because it is removed in Christ. ¹⁵ But to this day whenever Moses is read, a veil lies over their heart; ¹⁶ but whenever a person turns to the Lord, the veil is taken away. ¹⁷ Now the Lord is the Spirit, and where the Spirit of the Lord is, there is liberty. 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.

2 Peter 1.
^19 [k]So we have the prophetic word made more sure, to which you do well to pay attention as to a lamp shining in a dark place, until the day dawns and the morning star arises in your hearts.