A man suffering from emotional stress. Unhindered by Talent/Flickr Smiling man-Drmstm A photo of John Amos BrianAJackson/iStock/Thinkstock bodnarchuk/iStock/Thinkstock iStock/Thinkstock VikaValter/iStock/Thinkstock tomer benon/iStock/Thinkstock Peter Dennis/ Dorling Kindersley RF/Thinkstock