You are not a mistake. You are a created and wholly loved child of God. Each one of us came into being because we are wanted by a God who couldn't imagine a universe without us.
Once upon a time there was God. A God filled with so much love that He envisioned and planned each one of us, down to the number of hairs on our head. He created each of us in His image, that we might be His children and He might be our Father. And when we chose a path to take us away from Him - a path that would hurt us - He found a way to bring us back to safety.
Each one of us is different. We have different skin and eye colours, we have different cultures and languages, different hopes and dreams. But the one thing that connects us all is our wholeness in God. Created in His image we are called to love one another, and are reconciled to God and each other through Jesus.
And so you are invited to belong in His creation and in His family. Never doubt that you are not loved, and that you don't have purpose here. The divine master of the universe knows exactly who you are, and created you in love.
VERSES TO CONSIDER
Are not five sparrows sold for two pennies? Yet not one of them is forgotten by God. Indeed, the very hairs of your head are all numbered. Don’t be afraid; you are worth more than many sparrows. Luke 12:6-7
Before I formed you in the womb I knew you, And before you were born I consecrated you; I have appointed you a prophet to the nations. Jeremiah 1:5
I am the good shepherd; I know my sheep and my sheep know me—just as the Father knows me and I know the Father—and I lay down my life for the sheep. I have other sheep that are not of this sheep pen. I must bring them also. They too will listen to my voice, and there shall be one flock and one shepherd.
See what kind of love the Father has given to us, that we should be called children of God; and so we are. 1 John 3:1