"But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, humility, and self-control. Nothing in the Torah stands against such things." Galatians 5:22
The only way to produce the Fruit of the Spirit is to have the Ruach Hakodesh/Holy Spirit dwell in you. Paul used the term, "fruit” to help us understand the product of the Holy Spirit, who lives inside every believer. This happens when we believe and put our trust in the Messiah (Ephesians 1:13-14).
If a person does not have the Ruach Hakodesh/Holy Spirit, that person does not belong to Elohim (Romans 8:9); therefore, making it impossible to grow the fruit of the Spirit in his/her life.
We receive the Ruach Hakodesh/Holy Spirit at the moment of salvation, when we make a conscious decision to follow Messiah and let Him be the Master of our lives.
But just like seeds that must be planted, watered, and nurtured, our spiritual growth takes time before it can produce good fruit. The Ruach Hakodesh/Holy Spirit gives us the power we need to reject old sinful desires and constantly works to rid our lives of the “acts of the sinful nature” (Gal. 5:19) and display His fruit instead.
As we give the Spirit more control of our lives, He begins to do in and through us what only He can do - to shape us and grow us into the same likeness of YHWH (2 Corinthians 3:17-18). Therefore, the presence of the “fruit of the Spirit” is evidence that our character is becoming more like YHWH, the Spirit.