Can Dispositions be Taught?

Yes and no. I think people are naturally disposed to being certain dispositions. Some people are more patient, resilient, etc. and some people have to work at those things. I think everyone (except psychopaths) has the capability to exhibit dispositions but some of them need to be trained and practiced. That is something that can only be done if the person wants to work at them, because no amount of outside force can truly change a person. Only the person can make the decision to want to change.