Even though Tiffany Yelverton considers herself successful -- she owns a house and business, and does what she loves -- her internal struggles have been far worse than her external persona lets on. Describing herself as a "tortured soul," Tiffany says that when she went to therapy for clinical depression for the first time in her 20s, she was shocked to hear that "thinking about suicide isn't a normal thing."

She went on to try several antidepressants, in addition to therapy, to balance the chemicals in her brain. For several years, this proved ineffective for her, eventually pushing her to a critical moment. "I was so low that I literally looked at my boss and said, 'I need to go to my doctor right now.' I was at a breaking point, ready to give up and do myself in," she explains. That day, her doctor gave her a sample of Cymbalta, which Tiffany now calls a 'light switch.' "I thought, So this is how most people feel. This is amazing!' It was a clearing,'"

Now, to manage her symptoms, she takes a combination of prescriptions, sees a therapist and a life coach who uses the Emotional Freedom Technique (EFT) -- a form of emotional acupuncture -- to combat negative feelings.

Image via Tiffany Yelverton