"I know myself and I know the depth of my selfishness. I cannot be at ease (and to be at ease is my chief wish) if someone else is in pain. Sometimes this is mistaken by the innocent for unselfishness, when all I am is sacrificing a small good (my immediate convenience) for the sake of a greater good - a peace of mind - when I need only think of myself."
Adapted from The Quiet American by Graham Greene.
This seems applicable to me, but I have become aware recently that some sacrifices are too large for me.