Yes, it does. If you think you are junk. you will tend to act like junk. Some people cannot make friends because they are convinced they have nothing to offer. They become so terribly focused on their problems they can't escape themselves to think of others. So long as you think you are nothing, so long as you are preoccupied with the impression you make, you will find it very hard to love your neighbor or to truly love God.
When you sit in your bedroom moping, feeling sorry for yourself, you are as close to being worthless as any child of God can ever be. But you are not nobody, nothing, nowhere. Because God has made you someone, something, somewhere very precious.