Mazar-e-Sharif, Afghanistan (CNN) -- In a far flung corner of northern Afghanistan, Aziza reaches into the dark wooden cupboard, rummages around, and pulls out a small lump of something wrapped in plastic.
She unwraps it, breaking off a small chunk as if it were chocolate, and feeds it to four-year-old son, Omaidullah. It's his breakfast -- a lump of pure opium.
"If I don't give him opium he doesn't sleep," she says. "And he doesn't let me work."