"Heaven and earth will pass away, but my words will not pass away" (Mark 13:31).
This world is changing. People "change." Clothing styles change. All these crazy diets come out. The economy is ever-changing. Through it all, one thing remains the same... two things, actually. Kuya Joseph from the Philippines says the Big Mac never changes (haha). But he also made the claim that God never changes.
Nothing about Him changes. Think about the consequences of that for a minute. God sent his Word to be proclaimed to all peoples. What is one of the first things we know about God?
It was only after He made man that God said anything was VERY good. God thinks we are VERY good (cf Genesis 27-31).
You can try to invent your image, but God is the only one who can truly define us. He defined us as the most beloved of His creation. He defined us as His sons and daughters. Any other definition of "myself" that is not in line with that very basic definition doesn't really matter.