Soldier on
Definition 1 of 1
Pro Tip 1/3Negative Situations
Typically used when facing challenges or under tough circumstances. 
Despite the bad weather, we need to soldier on and set up camp.
Pro Tip 2/3Emotional Strength
Conveys determination and mental strength in difficult times. 
After the loss of her pet, she soldiered on through her studies.
Pro Tip 3/3No Quick Fix
Suggests there's no immediate solution and effort must continue. 
There's no cure yet, but we must soldier on in the face of this epidemic.