In Man's Search for Meaning, Viktor Frankl argues that the one freedom all people have at any time is the liberty to choose how to respond to a situation, no matter how dire that situation may be. The bad situations themselves often cannot be changed. People become terminally ill. People lose loved ones. People might lose certain abilities, such as sight or being able to work independently. People face great horrors such as persecution, natural disasters, or violence. These circumstances often cannot be changed, but the individual can choose to either face them with courage or to buckle under the pressure and give into despair.
Frankl understood this reality firsthand. When he was sent to the Nazi death camps, he could not alter his situation. However, he tried his best to give his suffering meaning by changing his attitude towards it. He thought about reuniting with his wife or finishing his manuscript, should he ever be freed. This gave him drive. While such an attitude did not wholly contribute to his surviving the ordeal (as Frankl observes, death often came arbitrarily in the camps), Frankl did at least stave off despair, which often caused prisoners to give up and die quickly.