Part of growing up is about figuring out who we are and the kind of people we hope to become. Loads of things have an indlience on our identity, such as where we live, our family and friends, and our interests, but our identity is also tied in with our self-esteem and how we feel about ourselves. Our feelings can be positive ('I am a good friend') or negative ('I'm not good enough').
Our identity can be very 'me' focused, so our feelings about ourselves shift around as we look to ourselves or other people to figure out who we are. But God wants us to focus on him, and to know that we have a secure identity in his love for us. The Bible has loads of verses about how we are loved, accepted and forgiven, and about God's plan for our lives.
Key Bible Verses
For he chose us in him before the creation of the world to be holy and blameless in his sight. In love he predestined us for adoption to sonship through Jesus Christ, in accordance with his pleasure and will to the praise of his glorious grace, which he has freely given us in the One he loves. In him we have redemption through his blood, the forgiveness of sins, in accordance with the riches of God’s grace
For we are God’s handiwork, created in Christ Jesus to do good works, which God prepared in advance for us to do.