"Everyone lives in his own way: you lived for yourself and say you nearly ruined your life, and found happiness only when you began to live for others. But my experience has been exactly the reverse. I lived for glory. And, after all, what is glory but the same love for others, a desire to do something for them, a desire for their approval? So I lived for others, and not almost, but entirely ruined my life. And only since I started living for myself have I been at peace."

War and Peace, Leo Tolstoy