Philippians 1:6 “And I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ.”
To give up is so easy for any person in this world, when you decided to walk with Jesus and to receive Him into your life, that’s when you experience challenges. Devil doesn’t really bother about people who are messed up but he has an issue with you because of your desire to be with God.
Every time you stumble, do NOT say “I don’t think I can change” that’s a lie of satan, the Bible says you can change and that all things are possible through Christ. He is faithful and will help you when you call unto Him. The bible says in 1 Corinthians 10:13:
“No temptation has overtaken you that is not common to man. God is faithful, and he will not let you be tempted beyond your ability, but with the temptation he will also provide the way of escape, that you may be able to endure it.”
If you fall, get up and say this “this time I chose the wrong path but listen satan, you don’t have anymore chances with me because I have decided to be with my God” say it like you mean it.