Even now after being baptized and coming to faith in Christ, I still have none, none of my own.
Besides I do not want to have one that is from me.
I have righteousness, for sure, but this righteousness is for the sake of Christ, the righteousness of God. Jesus gives his own righteousness to us. Like saying, here have it, I got it for you, I achieved it for you, have mine, use it, it is yours. I bled and died and rose again so you could have what I won.
None of me, none in me, all of him, all from him, all for his... sake.