That which must be overcome is sin -by a lifelong process of repentance. Christ overcame the world by not sinning.
1Jn 3:4 Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
The law includes the commandments -written in stone, as it were -and various statutes and judgments -some of which change over time according to God's plan -written in sand/dirt, as it were.
I'm not sure what you meant about the stripping of the ego identity, but there is nothing wrong with being an individual -and it's actually the whole point.
The fact that we will be given new names indicates individual identity. Individual identity and creativity are that which will provide infinite newness, joy, wonder, love, etc.
God is making us gods -individual gods with names, identities, creativity, etc. -and will even give a pure language for communication.
One sin is mastered, the YOU will still remain. YOU will not be removed from sin. Sin will be removed from YOU.
Rev 3:19 As many as I love, I rebuke and chasten: be zealous therefore, and repent.
Rev 3:20 Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me.
Rev 3:21 To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.
Rom 12:21 Be not overcome of evil, but overcome evil with good.
Rev 2:11 He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death.
Rev 2:26 And he that overcometh, and keepeth my works unto the end, to him will I give power over the nations:
Rev 21:7 He that overcometh shall inherit all things; and I will be his God, and he shall be my son.
Rev 2:17 He that hath an ear, let him hear what the Spirit saith unto the churches; To him that overcometh will I give to eat of the hidden manna, and ........... a new name written, which no man knoweth saving he that receiveth it.
Rev 3:12 Him that overcometh will I make a pillar in the temple of my God, and he shall go no more out: and I will write upon him the name of my God, and the name of the city of my God, which is new Jerusalem, which cometh down out of heaven from my God: and I will write upon him my new name.
Zep 3:9 For then will I turn to the people a pure language, that they may all call upon the name of the LORD, to serve him with one consent.
Joh 10:34 Jesus answered them, Is it not written in your law, I said, Ye are gods?
Joh 10:35 If he called them gods, unto whom the word of God came, and the scripture cannot be broken;
Joh 10:36 Say ye of him, whom the Father hath sanctified, and sent into the world, Thou blasphemest; because I said, I am the Son of God?
Rom 8:29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Php 3:21 Who shall change our vile body, that it may be fashioned like unto his glorious body, according to the working whereby he is able even to subdue all things unto himself.
Rom 8:18 For I reckon that the sufferings of this present time are not worthy to be compared with the glory which shall be revealed in us.
Rom 8:19 For the earnest expectation of the creature [creation] waiteth for the manifestation of the sons of God.
Rom 8:20 For the creature [creation] was made subject to vanity, not willingly, but by reason of him who hath subjected the same in hope,
Rom 8:21 Because the creature [creation] itself also shall be delivered from the bondage of corruption into the glorious liberty of the children of God.
Rom 8:22 For we know that the whole creation groaneth and travaileth in pain together until now.