Change takes place when you become different or make something or somebody feel different in a positive way.  First you have to know that you are fearfully and wonderfully made in Him and then you can share how God changed you to make a difference in the Kingdom of believers.  1 Corinthians 2:9 states:  Ye hath not seen, nor ear heard, neither have entered into the heart of man the things which God hath prepared for them that love Him.  This is not a saying of vanity or self-worth but a declaration for change and believe in your worth to the Father.