The Value of Maintaining Your Cool in Rummy Yono. One of the most important—yet underappreciated—aspects of winning at Rummy Yono is remaining composed throughoutgame cash the game. The mental toughness needed to remain composed under pressure cannot be emphasized; players' emotions can run high as rounds go on and the stakes increase. Players can choose their hands and gameplay tactics more logically when they develop a mindset that prioritizes strategic thinking over emotional responses.