Give my definition of spirituality: In addition to what Jim stated regarding the fruit of the Spirit, Gal. 2:20 immediately comes to mind.
“I have been crucified with Christ; it is no longer I who live, but Christ lives in me; and the life which I now live in the flesh I live by faith in the Son of God, who loved me and gave Himself for me.”
In Paul’s mind, to have the mindset of Christ, was where true spirituality existed (1 Corinthians 2:16; Colossians 3:1-4). Christ is the personification of spirituality.