It's not impossible, I was pretty darned good at sales. Not the BEST, but well above average. A lot of customers loved my honesty and willingness to work hard to get them what they need. EMPLOYERS didn't like me though because I wasn't hungry for commission and push their evil 99% profit extended warranties, etc.
Despite not being a greedy, manipulative schmuck, I usually placed 2nd or 3rd in sales with a lotta' people below me. It can be done.
If you know your material (houses) and genuinely want to help someone get what they can afford without screwing them over, word will get around and your clients will spread. Just remember to SMILE (no aspie neutral frowny-face!) and be as helpful as possible, I think you could make it work.
(Now, I don't know the specifics of real estate, I'm only speaking general sales. I was always in computers & electronics - my aspie obsession.)