I am guessing partly self esteem and partly growing up process. Being a teenager isn't easy we were all there at some stage. I know a few people who can relate.

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My Demon revokes any prayer
He's grown contempt for love and hope
He betrays trust, twists truth and fair
Indifference is his way to cope
Engulfing sound of sensations
He quells with voices of despair
And muse of short lived inspirations
Flees at the sight of his cold stare
~Moy Demon - Mihayeel Lermontov~