Conscious labor and intentional suffering are not so much separate practices as twin pillars of what amounts to essentially a single spiritual obligation.
Conscious labor is basically any intentional effort that moves against the grain of entropy, i.e., against that pervasive tendency of human consciousness to slip into autopilot. It means summoning the power of conscious attention (in our era perhaps more widely known as 'mindfulness') to swim upstream against that pervasive lunar undertow drawing us toward stale, repetitive, mechanical patterns, the siren call of World 96.
If conscious labor increases our capacity to stay present, intentional suffering radically increases the heartfulness of that presence. Intentional suffering goes head-to-head with that well-habituated pattern to move toward pleasure and away from pain. It invites us to step up to the plate and willingly carry a piece of that universal suffering, which seems to be our common lot as sentient beings in a very dense and dark corner of the universe. The size of the piece does not matter. It can be as small (though not easy!) as "bearing another human being's unpleasant manifestations," or as vast as "greater love has no man than to lay down his life for his neighbor."
The Heart of Understanding gives us solid ground for making peace with ourselves, for transcending the fear of birth and death, the duality of this and that. In the light of emptiness, everything is everything else, we inter-are, everyone is responsible for everything that happens in life. When you produce peace and happiness in yourself, you begin to realize peace for the whole world. With the smile that you produce in yourself, with the conscious breathing you establish within yourself, you begin to work for peace in the world. To smile is not to smile only for yourself; the world will change because of your smile. When you sit in the silence, if you enjoy even one moment of sitting, if you establish serenity and happiness inside yourself, you provide the world with a solid base of peace. If you do not give yourself peace, how can you share it with others? If you do not begin your peace work with yourself, where will you go to begin it? To sit, to smile, to look at things and really see them, these are the basis of peace work, love and unity.