Tricky answer for me.
Usually very much, but I'm also easily distracted, confused and/or overwhelmed.
I've found over time that, in general, I have more awareness of both self and environment than average...but only so long as my brain isn't being mostly occupied by something else.
When I focus on something, it tends to be intense enough that I start to tunnel vision if not lose complete sense of everything else.
If I get into a situation where I'm not sure what to do, my brain just goes nuts trying to figure out what to do and doesn't leave much space for other things.
In the past I rarely got overwhelmed, but these days long exposure to too much just fries my brain.
But other than that, I'm almost hyper aware of both myself and everything around me. No matter inebriation or intense emotions/mental states, there's always this little island of self-awareness in my mind keeping track of things...which is both a curse and a blessing. It keeps me second-guessing [and thereby sabotaging] myself in all social endeavors, but it also keeps me safe and keeps me from making bad decisions because of emotional impulse or unfavorable mental states.
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Thank you deeply for sharing your experiences. I don't feel so alone anymore.