"The butterfly does not look back at the caterpillar in shame, just as you should not look back at your past in shame. Your past was part of your own transformation".
One thing is certain you are not the same today as you were 10 years ago. You may inherently be the same person and stand for the same things but what is important to you now will certainly be different.
Know too that some of your changes will be orchestrated and decided by you. While others will happen because life happens, you cannot predict live altering events like falling in love or losing a loved one and these will change the way you view life. So embrace yourself at each stage and see it as a stepping stone to the next phase.