There are several basic propositions you can use by themselves or in various combinations overcome the recipient's inertia. (independent-authors.com)
Basic propositions of Individual Psychology. (alfredadler.org)
Both sides cited cases which stand for the same basic proposition: A beneficiary has a proprietary interest in and is entitled to production of documents relating to advice sought and obtained by a trustee in connection with the administration or management of, for instance, a pension plan, or an estate (see Froese v. Montreal Trust Co. of Canada [1993] B.C.J. No. 1529 (S.C.), aff'd [1993] B.C.J. No. 1847 (C.A.); Re Ballard Estate [1994] O.J. No. 2281 (Gen. Div.) (disinherited.com)