lol..fockin junkie!
You a Brit?
Welcome to EF.
I suggest you train to help your focus.
Weights and Cardio improve dopamine transmission... huge.
Everything you do, like watching what you eat, planning a workout, and achieveing goals helps develop focus.
Avoid processed food, excess sugar, and alcohol.
It makes ADHD so much worse.
Omega 3 fatty acids help as well as an adjunct.
Also, watch out about the addictive personality thing. We all are addicted to our habits. You don't have to be a morphine junkie or alcoholic or both to be an addict.
Hell, internet addiction is a growing epidemic... invisible.
Good Luck.
You should not have any fears about health, but the fact that you do is a good sign.