The danger may arise however of an overestimation of the possibilities of change, given that 'we do not in any meaningful sense intend or choose our birth, our parents, our bodies, our language, our culture, our thoughts, our dreams, our desires, our death, and so on'. In the " PsyBlog-Understand Your Mind ", Dr. Jeremy Dean states that "the dark side of hope is that claims about potential improvement can, and are, grossly exaggerated, in order to prise open our wallets. Similarly a bright and breezy approach to potential change may lead us to believe that changing ourselves is easy, when often it requires considerable, sometimes monumental, effort". The 'Twelve-step "Traditions"...have fostered a notion of individual self-mastery or self-control as limited...use of the Serenity Prayer encourages individuals to accept what they cannot change, to find courage to change what they can change, and to seek wisdom in discerning the difference'. Self-help books will indeed often acknowledge formally that 'this book does not replace the need for therapy and counselling for troubled relationships or survivors of a dysfunctional family'. In practice however, fueled by competitive advertising, often 'such books hold out to the reader the promise of a virtually "instantaneous" transformation'; and there ensues something of a 'built-in contradiction of the celebratory arc of the self-help book combined with the stubborn realities' of the human world.