The Fruit of the Spirit flourishes in faithful believers.
It goes with salvation.
Galatians 5:22-25
22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
23 Meekness, temperance: against such there is no law.
24 And they that are Christ's have crucified the flesh with the affections and lusts.
25 If we live in the Spirit, let us also walk in the Spirit.
If you are not producing the fruit of the Spirit, it is because you do not have the Spirit of God, which means, you are not saved.
If you are not flourishing with the fruit of the Spirit, it is because you have not died to the flesh (the Carnal Mind, the Double Mind, the Old Man, aka the sinful nature).
First, we must be born again, then we must die to the world and the flesh.
Some people call it Total Surrender (a good name), some people call it the Deeper Life (another good name), the Bible calls it Entire Sanctification, the Fullness of the Spirit, the Baptism with (or of) the Holy Spirit, Heart Purity (also great names for this spiritual reality).
There is enough grace in the born-again person to quit sinning and to have holy intentions, but it takes death to the Old Man for the believer to be set free from the inner battle with the sinful nature.
Those who deny complete cleansing tell us that believers live in Romans chapter 7. God tells us (at the end of Romans 7:24-25) that we are delivered from the inner conflict because of Jesus and we are delivered from our inherited Adamic corruption by the indwelling of the Holy Spirit (Romans 8:1-17).
Don't let anyone highjack your relationship to Jesus and keep you in a life of internal upheaval and a continuous cycle of failing and repenting. God's grace is greater than that. God not only saves us from past sins, He also saves us from a sinning life.