Anticipatory decision-making instruments – continuing powers of attorney and advance directives – are increasingly seen as a promising way forward to enhance the autonomy of adults with impaired capacity by making the adult's voice an influential component of future decisions. However, little is known about the experiences with these instruments in practice. This article presents the findings of an interview study looking at the expectations and experiences of both adults and attorneys with a Dutch anticipatory decision-making instrument, the so-called levenstestament. In order to realise its full potential, anticipatory decision-making instruments, such as the levenstestament, should be embedded in robust, timely and ongoing conversations between adults and attorneys about the adult's (changing) wishes and preferences and the role of the attorney.