Yes we "can" do all things through Christ, and yet:

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...on the one hand with my mind amd serving the law of God, but on the other, with my flesh the law of sin (Rom 7:25)

and

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For the creation was subjected to futility, not willingly, but because of Him who subjected it, in hope that the creation itself also will be set free from corruption into the freedom of the glory of the children of God ... we ourselves groan, waiting eagerly for our adoption as sons, the redemption of our body (Rom 8:20-23, emphasis mine).

Have you already been resurrected? Are you in your glorified new body already? Good for you! The rest of us must wait for the redemption of our bodies before we can love the Lord as perfectly as you can.

This is another of those glorious "already and not yet" scriptural truths that people point to when they're trying to argue that "the bible contradicts itself."