Holton reconfigures the traditional debate about akrasia, or ‘weakness of will’. In his view, previous work on this topic has run together two distinct notions that raise very different issues —acting against your better judgement, versus failing to stick to your resolutions. With the help of a wide range of relevant empirical studies, Holton uses his analysis to cast new light on topics such as will-power, temptation, addiction and free will.