live for
verb
Definitions
To deeply enjoy or be fulfilled by something esteemed as very important in one's life.
Example: I live for knowledge.
To find a reason to continue having the will to live.
Example: He has been chronically depressed and feels he has nothing to live for.
To eagerly await or hope for (a significant life event).
Example: I live for the day I can finally break free from my servitude.