Being delivered from a sin doesn’t mean you’re never tempted again, it means you have mastered the tools God has given you to overcome the temptation. Like anything though, I’ve found that if I don’t practice using those tools (Prayer, Studying the Word, Fellowship with the Body of Christ) I get rusty at using them and have to restrain myself. Don’t give up when you give in to temptation, just get back to training with your tools!

I affirm, brethren, by the boasting in you which I have in Christ Jesus our Lord, I die daily. 1 Corintians 15:31 NASB