How can we avoid suffering in this World?
This is the one cause of misery: we are attached. We are being caught. Therefore says the Gita: "Work constantly. Work, but be not attached; be not caught".
Reserve unto yourself the power of detaching yourself from everything, however beloved, however much the soul might yearn for it, however great the pangs of misery you feel if you are going to leave it. Still, reserve the power of leaving it whenever you want.
(Complete Works, Vol. 2, p.2-3)