The phrase "live to fight/see another day" is often used to express the importance of surviving a difficult situation in order to continue to pursue goals later on. When seeking synonyms, one could consider using phrases such as "persevere," "endure," or "survive." Other options might include "hold on," "stay strong," or "keep going." If looking for a more aggressive tone, one might choose phrases like "fight on," "push through," or "never give up." Ultimately, the chosen synonym will depend on the tone and context of the situation. The important thing is to convey the message that even in difficult times, there is hope for future success.