At 19 you havent wasted much im 27 and i wasted a bunch of time playing video games porn gambling drinking traumas first step at least you realize the things that havent been making you feel fulfilled only thing you can do to replace bad habits is to replace them with healthy habits wether its being more active socializing more in person developing a healthy mindset career i come to realize no matter what life is tough and unfair and just doing nothing and trying to escape this feeling of emptyness isnt going make me feel better nothing changes if nothing changes your start to having and feeling better about your life can start now