When you breathe in, think that you are breathing in all the miseries of all the people in the world. All the darkness, all the negativity, all the hell that exists anywhere, you are breathing it in. And let it be absorbed in your heart.

And when you breathe out, breathe out all the joy that you have, all the blissfulness that you have, all the benediction that you have. Breathe out, pour yourself into existence.

This is the method of compassion: drink in all the suffering and pour out all the blessings.