When we are born again “I” am no longer my flesh, “I” am my spirit

[Romans 7:15-17] For what I (flesh) am doing, I (spirit) do not understand. For what I (spirit) will to do, that I (flesh) do not practice; but what I (spirit) hate, that I (flesh) do. If, then, I (flesh) do what I (spirit) will not to do, I agree with the law that it is good. But now, it is no longer I (spirit) who do it, but sin that dwells in me (flesh).