As a believer in Jesus, the Bible assures that you are a new person.
It also describes the process by which you were made new. Your sin nature was cut out of you, and you received the righteous nature of Jesus (Romans 6:6; Colossians 2:11; Ephesians 4:24).
The result is that you are not a sinner.
Yet you still sin. Despite a change in identity, every Christian still sins and battles the natural effects of sin (bad attitudes, negative thoughts and feelings, stress).
I promise, this will encourage you.
By the way, if you’d like practical help to overcome the 2 reasons, check out my Think On These Things 30-day Scripture reflection journal.