The thing about The Thing

There's this thing. Actually the technical title of the job is "The Thing." Also, I don't know what else to call it. 

The opportunity has been there for a little while. One aspect of the thing is a trip to the United States to pick out some horses for some people Korea which could lead to more trips... not. Of course none of the potential trips stand any chance of happening if I don't do the first thing.

So that's the thing about the thing... it involves a lot of other things (teaching, animals, teaching,  farming, teaching, traveling teaching.) and I'm scared because my pay will be contingent on business variables. If things go well with The Thing, I will make a lot more than I am now. But if things don't go well I'll have to go back to what I'm doing now.

When phrased that way it really doesn't sound all that risky. But as I've mentioned before, I'm something of a neurotic worrier. Nevertheless, I'm going to do try The Thing. Now,  how to tell my boss???