Final answer:
In the context of 'Ender's Game,' Ender might suppress his emotions or think logically about his situation to prevent himself from crying. The provided texts do not directly answer the question but suggest common strategies to hold back tears, such as distraction or focused thinking.
Step-by-step explanation:
The question asks about what Ender Wiggin did to keep himself from crying, which is a reference to the character from 'Ender's Game' by Orson Scott Card. The text provided, however, does not directly mention Ender Wiggin, thus it is assumed that the question is about a reaction similar to that of the character in a situation where he is trying to hold back tears.
To keep from crying, someone might use various strategies such as deep breathing, distracting themselves, or focusing on something else to regain composure. Specifically, in the case of Ender from the novel 'Ender's Game', he typically tries to think logically about his situations and suppresses his emotions to cope with the challenges he faces.