To lose your carnality you should let sayings of Jesus transform your attitudes and actions. And first you must believe in him.
Maybe you were taught wrong. Maybe you were taught becoming spiritual is something that happens to you as if by magic. No. It is something you do. You are commanded to do it. You believe in Jesus and you hold to his sayings, letting them dwell in you, dwelling on them, letting them influence and guide you thoughts, words, plans, and actions. The Holy Spirit can powerfully help it along, yet it is your responsibility to commit to it and do your part. Sayings of Jesus and of those sent by Jesus must be something you adhere to, and keep adhering to, so they influence you and instruct your everyday life. Otherwise you do not have Jesus, nor the Father who sent him.
