What does ‘take up your cross’ mean?

What was crucified on the cross?

The body; the flesh. Sin, the old nature. “He who knew no sin became sin for us, that we might become the righteousness of God in Him.”

Therefore:

• Through the Holy Spirit, continually put to death the flesh & its sinful desires & replace them with Christ Jesus & His righteousness
• “Therefore put to death your members which are on the earth: fornication, uncleanness, passion, evil desire, and covetousness, which is idolatry. But now you yourselves are to put off all these: anger, wrath, malice, blasphemy, filthy language out of your mouth. Do not lie to one another, since you have put off the old man with his deeds, and have put on the new man who is renewed in knowledge according to the image of Him who created him,” Colossians‬ ‭3‬:‭5‬, ‭8‬-‭10‬ ‭NKJV‬‬

• “For he who has died has been freed from sin. Now if we died with Christ, we believe that we shall also live with Him, knowing that Christ, having been raised from the dead, dies no more. Death no longer has dominion over Him. For the death that He died, He died to sin once for all; but the life that He lives, He lives to God. Likewise you also, reckon yourselves to be dead indeed to sin, but alive to God in Christ Jesus our Lord. Therefore do not let sin reign in your mortal body, that you should obey it in its lusts. And do not present your members as instruments of unrighteousness to sin, but present yourselves to God as being alive from the dead, and your members as instruments of righteousness to God. For sin shall not have dominion over you, for you are not under law but under grace.”Romans‬ ‭6‬:‭7‬-‭14‬ ‭NKJV‬‬