Why teenage is so stubborn?

It is a Teenage story of a boy, Harley . How he overcome from his Teenage mind with love, financial problems, anxiety, stress, depression, addiction, etc. These are all started with love, It's a unsolved mysterious deaths by his girl friend and his high school friend, it's a unknown number makes him so crazy to combined with a dream of a beautiful mysterious face girl. After so many ups and downs he got a New life which he want. He got all the answers from his unexpected friends .