I think I'm one of the other HOH interpreters that Etoile is referring to. And she and I are in similar boats.
I grew up with chronic ear infections that gradually took their toll on my hearing. To be more specific, I have a sloping high frequency hearing loss. My hearing is a little below normal in the low frequencies, and tapers off to a moderate/severe hearing loss in the middle and high frequencies respectively.
Because I grew up speaking English and my hearing loss was pretty gradual, my brain learned to make up for the deficiencies in my hearing. It eventually got to the point where I was struggling in certain situations (women and children with higher-pitched voices, rooms with poor acoustics, a large number of participants, etc).
I now have two hearing aids that I wear in those situations. I don't wear them all the time because I find them uncomfortable. But I notice that I can't understand the TV without looking at it (I lipread more than I ever thought I did) if I don't have my hearing aids on.
How does this impact my work? Not much, really. I haven't had any negative reactions from deaf consumers. I wear my HAs when I need to, and I don't wear them when I don't. But I always have them with me.
EDIT: I also have a VERY hard time understanding people who speak accented English (southern, English, especially Asian and African people who speak English with an accent).