(Aging Untold) - It's been a decade since Susan Lehman was diagnosed with multiple myeloma, a rare blood cancer that develops in plasma cells in the bone marrow.

"I trust God with my life and with what he has in his plans for me, and so that gave me a sense of peace," Lehman said.

"But it's still a scary thing." Multiple myeloma is treatable but not curable, Lehman said.