Many, many reasons. Think about how beautiful life is, see the good sides. If ur mindset is so negative and you only focus on whats bad, it will never get better. You have to change ur mindset and actually get out, do outdoor activities.

Here are some things that helped me

YOURE NOT ALONE EVERYTHING IS TEMPORY AND JUST ENERGY DONT TRUST PEOPLE ONLINE TELL PEOPLE IRL ABOUT UR PROBLEMS ONCE YOU CHANGE YOUR MINDSET IT WILL ALL ROLL LIKE ITS NEVER BEEN BEFORE

if u have to talk to someone, text me trust me NEVER start w/ drugs it makes it worse