For a few years now I ' ve experienced rather severe depression that did n't respond to any antidepressants on the market . I ' m now off all of them and am just depending on the old one day at a time system . Today when I woke up , I barely made it 15 ft . before I lost my balance and lost my sight for about 10 seconds !

Question: Why has the narrator had issues with unhappiness ?
Their meds do n't work .