"And the peace of God, which transcends all understanding, will guard your hearts and your minds in Christ Jesus."
Academics, career, family, a sport or a hobby, having fun...
These are all good things, but they don't belong at the centre of our lives. None is strong enough to hold us together when life starts breaking apart. We need an unshakable centre.
How do you know when God is at the center of your life? When God's at the center, you worship. When he's not, you worry. Worry is the warning light that God has been shoved to the sideline. The moment you put Him back at the center, you will have peace again.