I was reading through the book, and I thought to myself "it's kind of weird that someone with willpower 1 has the same psychosis limit as someone with willpower 5, or even 10". So with this in mind I thought up this alternate setup. Someone psychosis maximum (the number they must stay under or go insane) is a multiple of their willpower, either WILLx3 or WILLx4. Even with this setup, someone would still be able to go up to the second to last psychic skill in their list without going insane(if they had 5 WILL), but it they where willing to spend the XP to get willpower, they could avoid the insanity. The WILLx4 option means they only need 6 WILL to keep from going insane, whereas the WILLx3 option means they need 7 WILL to keep the crazy down. The WILLx3 option probably makes more sense, as the last skill can often be really REALLY strong, so it should be hard to get the skill without going insane. Using this setup you can also just get the skill and get the therapy after the GM has some fun with your psycho psychic.
If the therapy doesn't bring the psychosis to under the crazy limit of your character, there are two ways this can be handled. The first is that the psychosis is brought down to 1 under the crazy limit. The second (and my preferred choice as I think it makes more sense) is simply that the character must pay more XP (2XP per 4 psychosis points, as in the book).
