"I knew you before I formed you in your mother's womb. Before you were born I set you apart and appointed you as my prophet to the nations."
Jeremiah 1:5, NLT
God knew you, as he knew Jeremiah, long before you were born or even conceived. He thought about you and planned for you.
When you feel discouraged or inadequate, remember that God has always thought of you as valuable and that he has a purpose in mind for you.