Speak well of yourself! What better way to increase your confidence and self-esteem. Say the things God says about you. Choose to believe that about yourself and your life. Don't believe the negative word(s) the world or people have spoken about you. Believe and know in the God you serve! Have confidence that you are who God has called you to be. And that He will equip you with what's needed to be the better you! Take joy in knowing that God has spoken, and no one can change it. Let this scripture encourage your heart!
Philippians 1:6 KJV
Being confident of this very thing, that he which hath begun a good work in you will perform it until the day of Jesus Christ.