We all, with unveiled face, beholding the glory of the Lord, are being transformed into the same image from one degree of glory to another. Paul describes a process that happens through relationship, not through effort.
The veil is removed. In the New Covenant you stand before God with an open face. And in this closeness you are transformed, not through rules but through presence. Guidance happens through relationship, not through pressure.
You do not have to change yourself. You may stay in his presence and allow him to shape you.