Changed, Renewed in God

Col 3:5-11

5 Therefore consider the members of your earthly body as dead to immorality, impurity, passion, evil desire, and greed, which amounts to idolatry. 6 For it is because of these things that the wrath of God will come upon the sons of disobedience, 7 and in them you also once walked, when you were living in them. 8 But now you also, put them all aside: anger, wrath, malice, slander, and abusive speech from your mouth. 9 Do not lie to one another, since you laid aside the old self with its evil practices, 10 and have put on the new self who is being renewed to a true knowledge according to the image of the One who created him — 11 a renewal in which there is no distinction between Greek and Jew, circumcised and uncircumcised, barbarian, Scythian, slave and freeman, but Christ is all, and in all.
NASU

Action: How can I tell I am changing?