Sacrifice.

Sacrifice is one of the

 most powerful things

 that a person can do. Why?

Because it means you're willing

to give up something about yourself

 for another person you care about.

 It means that you are willing

 to give up anything or everything,

 even if it means your own being,

 so that another can have a place in this Universe.

 Sacrifice means that you'll give a gift of living

 for the person(s) you care about,

 even if they don't realize the gift you've given.