Jamie Heaslip is one of the most decorated players in the history of Irish rugby. Over the course of a thirteen-year career, during which he amassed 229 appearances for Leinster and 100 international caps, his name became synonymous with both the Irish No 8 jersey and the values that have propelled the growth of professional rugby in Ireland: diligence, professionalism and an unwavering commitment to self-improvement.

Here, in a frank and stirring account of his years on rugby's front line, Heaslip recalls the events, wisdom and personalities that helped craft his winning mindset and vault Ireland to the summit of world rugby. An inspiring personal memoir and insider account of Ireland's transformation from amateur backwater to professional powerhouse, All In is also a profound meditation on sport, leadership and what it takes to succeed in the harshest of environments.