A man can easily get discouraged with life and give up on himself. Feelings of inferiority and a loss of significance become defeating. He eventually feels as if he is not good enough for anyone and not good at anything.
God gave Adam significance when he was created and restored his significance after his biggest mistake. When we seek significance outside of what God gives, it turns to dust. Watch this 90 second sermon and don't give up on yourself.
The Bible has 66 books, but it is 1 story. The Bible hosts a multitude of characters, but it only has 1 main character. By reading the Bible as one cohesive story your understanding of the Scriptures will deepen and you will see God working in the world like never before.