Integrity With Yourself

I have a friend who acts like a completely different person around a guy that she likes.  One of the big first steps in developing integrity is being true with yourself.  How can you expect to be able to be honest with other people, if you can't be honest with yourself?  You have to be who are, and say what you mean.  Being the best version of yourself brings peace of mind, and attracts other people around you to do the same thing.