Yes, he is talking about his
failed fight with the desires of the flesh in Romans 7. You cannot fight fleshly desires with the mind. It is through the power of the Spirit that fleshly desire is slain. He goes on in Romans 8 to explain this.
Romans 8:13
13if
by the Spirit you put to death the misdeeds of the body, you will live.
Born again people will always have the corrupt desires of the flesh to contend with. That's because the flesh is unredeemed. The redemption of the flesh does not happen until the resurrection.
Romans 8:22-23
22We know that the whole creation has been groaning as in the pains of childbirth right up to the present time.
23Not only so, but we ourselves, who have the firstfruits of the Spirit, groan inwardly as we wait eagerly for our adoption to sonship, the redemption of our bodies.