So, my most challenging clients would be my hearing impaired clients. I work with the hearing impaired often, and because their education, maybe they haven't received the best education, and maybe ... But because some of them maybe didn't go to college or didn't finish school, there's a lot of times where I'm face to face with them, I'm talking with them, and I'm having to really just kind of dumb it down and explain everything just from the basics and what the consequences will be. If this happens, then you can expect for this to be the expectation in return. So definitely my hearing impaired clients are by far the most challenging, but I just be patient with them and make sure that they fully understand what they're getting, and if they have any questions, I'm there to really ... I'm always there.