i also have severe anxiety. i am only 17 so i do not know what a drunk/high feeling is like. however i am familiar with the spaced out sensation. these are factors that contributed to my spaced out feeling: hyperventalating chronic insomnia comorbidity in the anxiety spectrum (adhd in my case) in addition depending on what form of anxiety you have perhaps your worried thoughts are always on your mind and thus prevent you from staying in the moment. this was true for me - i have ocd. i think it would be in your best interest to see a psychiatrist.
i was wondering why i feel spaced out all the time it feels like a drunk or high feeling? it is all day long. i do suffer from anxiety but this feeling is all day and night. it is very scary it also makes me feel somewhat tired or fatiged