sadly it is true. i myself have been suffering from emotional problems. that made me depressive and I even had some heart problems. I was on pills for a while. It was not only mental pain but a real one...like I had constant heartaches and headaches... I'm better now but it's not over yet..
yeah, smiling and laughing do a big job everyone should try to smile and laugh as possible as they especially with people they love or like. i feel much better thanks to my family and friends, the people who care about me...