Take one lie you've believed, maybe it's, "I'll never change," or, "I'm too broken," or, "This is just who I am," and replace it with what God says is true about you. "If anyone is in Christ, he is a new creation." Anyone, everyone, new creation. "Old things have passed away.
Behold, all things have become new." 2 Corinthians 5:17. Declare what God says about you until his truth silences the voices in your head. Jesus gives you the hope you need to begin again, starting now.