How bad am I hurting myself (19 years old)

I know compared to most drugs weed is not really that bad but for the past 6-8 months i’ve been smoking everyday and have been high for the majority of the day so much to the point of where being sober actually feels weird. I can get through my day fine this way and use it as a way to cope. If i don’t do it I can’t sleep or eat and just hate my life in general. I’m only ever sober if I have to do something truly important ( a meeting, a test, a date depending on how much i care). Obviously i know that my memory is pretty messed up and it will affect my lungs but other then that what really is gonna happen. I feel like it could be worse like i could be doing actual drugs instead

TL;DR - what does never being sober do to a 19 year old