I've picked up a new student this past week. She's 45 years old and not autistic but Chinese. The route of communication often looks similar, however, until my sign language flashes an appearence. Yana doesn't understand sign language any more than she understands English, so I need a full out game of charades at times. She's ready to learn, eager and appreciative which makes my job much easier. There are really only a couple things I believe I'm good at, and teaching is one of them, even on the day I'm tired of talking and could more easily take a nap.
So the inspiration and motivation still make an appearance. I just have to look for it harder some days.
pictures via amodernhepburn