Rom 8:1 There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit.
Rom 8:4 that the righteousness of the law might be fulfilled in us, who walk not after the flesh, but after the Spirit.
Gal 5:25 If we live in the Spirit, let us also walk in the Spirit.
By default we walk in the flesh. If you are not walking in the Spirit, then you are in the flesh. The only way to not walk in the flesh is to walk in the Spirit.
Ezekiel 36:27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
Our part is to exercise faith that the Holy Ghost causes us to walk in the Spirit.
Luke 21:19 In your patience possess ye your souls.
The Holy Ghost produces patience in us as a fruit of the Spirit (Gal 5:22-23). We then have a choice to choose to trust in God’s words and choose patience. Thereby we possess our own soul, rather than being driven by Satan and the flesh (Mt 6:22-24; Luke 16:13-15; John 8:44)
Galatians 5:16 This I say then, Walk in the Spirit, and ye shall not fulfil the lust of the flesh.
Tell your soul: “This I say then, walk in the Spirit!”
Tell your soul: “you will NOT fulfil the lust of the flesh!”