I Thessalonians 5:23-24
And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ. Faithful is He that calleth you, who also will do it.
To change, you must be ready to give up what you are for what you can become. It will require a sacrifice on your part, but God will be faithful to help you, if you will but call upon Him.