What’s your deepest, darkest secret? In this emotional video, dozens of letters are sitting in envelope, waiting to be read out loud. They were all penned by people who wrote secrets they found impossible to say out loud. When strangers sit down to read the letters, it's the ultimate test of empathy, as they attempt to put themselves in the shoes of the writer. Some individuals reveal feeling guilt over a loved one's suicide, or responsibility for a parent’s reckless behavior. Though we can’t imagine what holding all these secrets must feel like, knowing that people you see every day may be holding on to years of pain will inspire you to act with more compassion and empathy.